HP laptop won’t turn on black screen

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A common problem with the HP Pavilion dv6. flashing caps lock

A common malfunction in the HP Pavilion dv6 laptops deserves special mention. The American company in this series of laptops frankly messed up with a cooling system, which is why the devices get very hot during operation. We have previously covered how to disassemble the Pavilion dv6 and dust it to keep the system temperature down. However, this does not always save.

If pavilion dv6 does not turn on, and the caps lock indicator flashes once, hinting at a processor malfunction, the problem with a high degree of probability may be in the graphics adapter, which also does not bode well, and the main thing here is to decide where and how to repair the laptop. If the diagnosis confirms the “diagnosis”, the cost of replacing a video chip or the entire system board can be up to half the price of a new computer. However, you will certainly be offered a cheaper repair method. heating the chip. This method can be called artisanal, but it works and is relatively cheap. True, no one will give a guarantee for the long-term performance of a laptop.

What to do if your HP laptop does not turn on, that is, after startup, you see only a blank black screen, and the Caps Lock (or Num Lock) key light blinks on the keyboard?

Problem when turning on the laptop when nothing is happening on the screen, although the fan is running. serious cause for concern. When your HP computer fails to start, the Caps Lock light on the keyboard usually flashes for a reason. Depending on the frequency of blinking, you can determine the error code that will help us to pre-diagnose the malfunction.

If the laptop does not turn on and the battery light is blinking or off, the battery may be insufficiently charged. When operating “from a wall socket”, the laptop should turn on. If everything is in order with the battery, and at startup, the indicators near the Caps Lock and / or Num Lock keys flash, you need to count the number of flashes and determine the reason by their number. The official website of the HP company gives the following signal decoding:

Caps Lock / Num Lock Test Component Malfunction
Flashes onceCpuDefective central processor
Flashes 2 timesBIOSBIOS corruption
Flashes 3 timesMemoryMemory module defective
Flashes 4 timesGraphic artsGraphics controller defective
Flashes 5 timesMotherboardGeneral system board failure
Flashes 6 timesBIOSBIOS Authentication Failure

But it is not always possible to reliably determine the malfunction in this way, so the laptop will have to be sent to a service center in any case. However, we will give explanations from the HP website to the listed malfunctions.


It was the same with my HP laptop, instructions from the official HP support site helped, there were no repairs.

After four years of faithful service, my dv6 is also covered. It did not turn on, the caps lock blinked once. I went to the HP website, checked the symptoms and thought “definitely a processor”.

I have already found the required percentage in my city, but nevertheless I decided to go to a familiar IP repairing computers. He immediately pronounced another verdict. the problem is not with the process, but with the vidyuha. We decided to do everything as cheaply as possible. warmed up the chip, gave it 50. The laptop has been working normally for a month, although no one can give a guarantee here, how lucky.

I’m fucking hot for 5 bucks, for 50 you can change it yourself to a new one)))

Thanks for the site, I cleaned the RAM, blinked 3 times, and everything worked, although after starting I immediately changed the OS. Thanks you!

I have such a problem, the laptop was lying for 2 months then I turn it on and Only the caps-lock blinks, constantly with periodicity every 2 seconds. what will you please tell me?

The lights next to the Caps Lock and Num Lock keys flash when an error is detected during startup. The indicators flash a certain number of times in a row and then go out. The number of flashes in sequence indicates which component caused the error when tested during the initial check. If the lights stop flashing and the computer does not start, you can press the power button again to re-run the test. Count the number of flashes and determine the cause of the error using the table.

What if both lights are blinking constantly?

I had the same problem, just the memory bar is either badly worth it or xs. yelling, this problem was solved, I just put the memory bar in another slot and the laptop started so try everything with me it went without repair

A similar problem with the HP dv6 laptop, after turning on the screen is black, the signal is not sent to the external monitor either, Caps Lock blinks constantly at a frequency of 1 time per 2 seconds. What could be the problem?

caps lock flashes constantly! The hard disk drive indicator lights up in red. He took out the railway, started everything smoothly. They write that it should blink a certain number of times, but I have it blinking constantly! tell me what to do.

Also, capsnum blinks constantly with a frequency of 2 seconds.
The indicators for mute, volume, wifi and touchpad are on. The screen is dark.

Help me please. Also HP Pavilion bv6, 4.5 years old. It began to warm up, I disassembled it, right up to removing the cooler, cleaned it, as I already did. I changed the paste. Collected and a black screen, flashes 2 times with indicators. Disassembled / assembled several times, even launched it in a disassembled state. to no avail. They will read that this is the BIOS and you have to wait. It has been buzzing for 2.5 hours, there is no effect. What to do, tell me.

Alas, the HP support service in its instructions does not say anything more about this except that you just need to wait. It is better to take it to the service, since the blinking indicators, although they flash according to a certain scenario, cannot be diagnosed with 100% certainty.

Dmitry, unsubscribe pliz I have the same problem 3 day twisting twirling nothing helps (the model is the same)

Similarly, I disassembled the HP 630 with a problem. it warms up, cleaned the damped radiator, lubricated the cooler, replaced the thermal interface, assembled everything. and oops, the laptop does not start, all 3 indicators (Power, Caps and WI-FI) are blinking constantly. As a result, he took alcohol, ear cleaning, thoroughly cleaned the contacts, wiped dry. and voila, everything started! Conclusion. HP diagnostics in the furnace, because here she points to percent, not memory, which can be confusing!

Hello! fixed the laptop? if so what was!

Hello, my screen is off and the caps looms constantly every 3 seconds.

Good day. Video card, one of the bridges, processor. the most likely reasons in this case.

I pulled out the battery. it started up “as if nothing had happened”.

hello, there is an HP pavilion dv6-2116er laptop after 2 months of operation (did not turn off 2 months) does not turn on, the indicators are on only caps, number and the power indicator without blinking, the fan is working, after cleaning, it turned out that the south bridge is very hot ( you can’t even hold a finger), about the percent and the southern one, I am silent, they also warm up at a moment to boiling water (maybe they should be warming up like that?). have any thoughts. I will be very grateful.

dv6s love to die after heavy graphics loads. By the way, did the laptop work for 2 months without shutdowns at all or was it in hibernation mode? (a nasty mode from which they often never wake up). A laptop is on its way to service; both the south and north bridges can be sentenced. They can write off for a replacement, or they can try to warm up the chip in the hope that it will come to life and work until the next critical loads.

Hello! Faced a black screen problem, the fan was working, Caps Lock blinked 2 times. All instructions from the office. site did not help. Conversation with tech support too. We were advised to take it to a service center. I don’t know much about computers, but my intuition helped. I pulled out a small battery, as I understand it from the BIOS. The PC booted up and reset the BIOS settings to the factory settings, then put the battery back in place and lo and behold! My computer works as before again)))!

Thank you so much! ! ! I also have the most caps lock f12, in general, I pulled out the battery and everything worked thanks again!

There is another option, pull out Akum from the power supply, hold the power button for about 10 seconds

Thanks for the tip. There was the same problem, the CAPS did not start blinking once, it fooled everything, and following your advice pulled the battery and lo and behold, it is back in operation.

Good day everyone!
Can anyone come across such a problem?
HP pavilion dv6-6030er notebook pc. When turned on, the lamp on the f12 key lights up in orange and the caps lock flashes constantly. In this case, the hard disk will not start and the screen will not turn on. Only the cooler starts up (starts to spin) and the dvd drive. After a while, as if nothing had happened, and always at different intervals, the laptop turns on and everything works, only always when you turn on the error 502 (CMOS reset), but after pressing enter, 7 starts without problems. There is one more feature. The clock is always knocked down, every time you turn it on, you have to re-adjust. After work, when the computer is turned off, interesting things also happen) The screen goes out, and the lamps in the f12 and on / off keys remain on. And so on until you lift or rearrange the laptop. Only then does it finally turn off.
I’ll tell you right away that I changed the battery 2 times.
The laptop was cleaned of dust. Thermal paste was changed.
I tried to rearrange the memory from 1 slot to another. it does not help, everything is the same.
When the PC was turned on, it tested the hard disk drive and memory. Everything is fine, no errors were found.
I ran it on antiviruses, everything is clean.
Overheating, so that there was never a shutdown of the computer.
I don’t even know what to think about? Maybe the percent is covered? But on the other hand, if it has already turned on, then it can work all day without problems. Broke my whole head
Can anyone come across such a problem?

If the date and time are lost, check the battery, replace it. If it does not help. mother’s problems with keeping BIOS parameters!

laptop povilion dv7 flashes 1 time caps lock.
very rarely, but it happens that it turns on, what can be?

HP 630. Caps flashes 11 times, then it is cut down, after reboot the same thing. What to do.

I have such an interesting problem HP dv7-1270oe laptop I turn on the laptop everything works except the screen and blinks every 3 seconds Caps Lock and num Lock without ends. What could be the reason ?

I have an HP pavilion dv6 laptop, too, the capslok blinks and f 12 is on, passed it for diagnostics, did not find the reason then I started it at home by holding clrl alt esc_ right now I will try to reinstall Windows what happens

Dude, thanks a lot! It helped) I only did 3 times and it all worked! PC this time 3 was already given for repair and no one could do it)

Thanks for the expanded comment. Everything is just like that. It’s amazing how a company with that name released such a problematic laptop, and even with such a high price tag, and the first year or two, when you can make a claim, it works flawlessly and pleases up to an hour X.

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Top Factors That Cause Black Screen

There are dozens of factors due to which such a screen appears. From here, to make it more convenient, we will divide them into categories:

  • The hardware of the computer is incorrectly configured;
  • There is a malfunction in the battery or charging;
  • The monitor cable is cut off, the backlight or matrix is ​​out of order;
  • The computer’s RAM or the slot of this board is out of order;
  • The video card is out of order;
  • The system board is damaged due to overheating or damage.

Of course, not all of these malfunctions are eliminated by the user himself. For some problems, only the master is competent. Therefore, let’s take a look at which of these tasks a person can fix on their own. One of the most common problems is video card failure. To find out if the screen is working, the fastest way is to connect a second external screen. Does it also not function for you? In this case, the fault lies with the video card.

It is impossible to change various parts in a laptop yourself without having the necessary knowledge. In this case, you need to contact a professional. Of course, you can start repairing your laptop yourself. But, the matter can go so far that you cause more damage to the computer than it was before your repair. The only way out in this case is to buy a new monitor.

How to boot a laptop into Safe Mode?

Quite often, the laptop reboots after turning it on and the PC screen simply does not have time to boot normally. At the same time, it is advisable to load it in safe mode:

  • Before loading the device, you need to enter another boot method. the F8 button (sometimes the DEL button or other buttons of the F row are suitable for different models). It is best to look at the instructions for the motherboard;
  • In safe mode, you need to choose one of 3 boot options;
  • Then, we enter the OS in this mode;
  • Also, you can enter the system in BR in other ways. For example, through the command line “cmd” and “msconfig”. These applications are launched if you enter these labels through the “Start” search.

So, in BR you can reconfigure the laptop:

  • We turn on the device;
  • Reboot the OS and enter the “Control Panel”;
  • The OS is loaded in the panel;
  • Then, the “Advanced system settings” window will open;
  • Then, run “Advanced”, then “Startup and Recovery”;
  • After that, go to the parameters and remove the check mark from the “Restart automatically” command. Then you need to save the tinctures.

This operation makes it possible when you turn on the computer again and the error “0x000000000 NO_DEVUCE_BOOT” appears on the display. How to fix this failure is described in detail on the Microsoft website.

Black screen with cursor

When the PC overheats, some of its devices are turned off. For example, the same monitor. It can turn off in full screen, or some part of it. Due to overheating, the video card turns off more often than others. If so, you need to turn off the device and cool it.

Usually, the temperature is checked using either AIDA64 or Speccy. It is advisable to check the temperature twice a week, or at least once.

These programs show the temperature of other parts of the mobile gadget. When the device overheats, the display may also turn off:

  • The CPU also has the ability to turn off the monitor when it overheats;
  • When the motherboard overheats, various problems are possible in the PC;
  • When the hard disk drive overheats, there are also problems with programs and utilities on the PC;

When errors occur in settings or a failure in the functioning of the computer, the only method of restoring programs to a failure is to boot the computer in safe mode (BR).

How to remove an error in BR?

Even after loading the computer into the BR, your laptop still loads automatically? In this case, you need to do the “Windows Restore”. To do this, Windows needs to select a version of the system, to which it is easy to return: make the choice of the date at which the screen worked perfectly.

In the event that you managed to launch the OS and the screen started working, then it is advisable to start updating the video card drivers and BIOS. Including with a perfectly working monitor, it is advisable to update the drivers periodically, about once every 30 days. It will be easier for you if your PC updates them automatically.

You need to install a working BIOS version

If your second screen works fine, but your computer screen refuses to work, also disabling the settings and returning to the factory settings BIOS could not help, in this case it is advisable to reflash the BIOS.

It is possible to update the BIOS in different ways:

  • Using the “MS-DOS” option;
  • Using the OS;
  • Without entering DOS and starting the computer.

The easiest way to update the BIOS is to use third-party software. But, it is more correct to manually go to the main resource of the creators of your motherboard and simply download updates from this site.

The main thing is to create a backup copy of the OS or at least a restore point before installing the BIOS. When you start installing BIOS without an access point, your system may crash and you will lose all settings.

Let’s analyze the functioning of the monitor

You have a reason to think that the monitor is not working due to mechanical problems, in this case you need to find out how the video card works with the motherboard.

So, let’s connect a second display to the laptop using the HDMI input (VGA is possible). We turn on the computer. If after switching on the second first screen is working, then the monitor or backlight loop on the monitor is faulty.

Important: you can start starting your computer when you have already connected an external screen. To freely switch from monitor to monitor, you need to use the Fn and F8 buttons. Relevant for ASUS and other brands.

Further, we will carry out all operations to remove failures and errors in the settings and various programs with a faulty display using a second monitor (you need to take it from friends for a while) by connecting the monitor via the VGA / HDMI input.

Screen health check

If the laptop does not turn on the first time, and the screen is black, perhaps the whole problem lies in the screen itself. To find out for sure, you need to check the health of the computer screen.

This recommendation should only be used if the power key was pressed and after that the laptop began to show signs of life. I.e:

However, the image did not appear, then an additional monitor should be connected to the laptop. As a rule, all laptops have a special connector so that you can connect another one. If after rebooting the device, the operating system boots, then the problem lies in the screen.

In this case, you should contact the service center and consult with specialists.

Why is a black screen on a laptop and it won’t turn on

Almost every second Windows user is faced with a problem when the laptop does not turn on and at the same time only have to contemplate a black screen. We can say that this is almost the most common breakdown.

However, everything may not be so serious and perhaps there is no need to run to the service center for help. First of all, you need to figure out the causes of the malfunction yourself. Perhaps you can fix the problem with your own hands, without contacting specialists.

Causes of malfunction

The reasons why the user cannot turn on the laptop can be divided into several categories. Among them:

the device could overheat, the result of this could be damage to the south or north bridges;

problems with the video card or processor;

the battery could fail, but this happens quite rarely;

the problem is in the hardware settings of the computer;

In the last two cases, you can deal with the disorder yourself at home.

laptop, turn, black, screen

ingress of moisture and various debris into the system.

Resetting hardware settings

What if you need to reset all hardware settings? For this:

the user must disconnect the laptop from the power source;

pull out the charger from the socket;

then press and hold the power (power on) key of the device for 20 seconds;

Important! Holding down the button for such a long time is necessary so that the residual charge in the laptop is removed.

then you need to insert the battery in place or connect the power system;

after that, select the item “Normal Windows startup”;

If these actions did not help to solve this problem, it is worth moving on to the next point.

Reset BIOS

Maybe the black screen problem appeared immediately after the user made some changes to the basic BIOS settings. In such a situation, it is necessary to reset these same settings and return to the factory settings, that is, the original.

To complete this task, you must adhere to the following instructions:

as soon as the laptop was turned on, immediately press the F10 button and hold it for at least 10 seconds;

after which, you should press the F9 key;

laptop, turn, black, screen

then click Enter (these actions will help you return to the original settings);

the next step is to press the F10 button again;

to save the new settings, you must click Enter;

then you should reboot the device.

If, after restarting, the computer works as before, then all problems have been fixed. However, if these frauds did not bring a positive result, it is recommended to proceed to the next step.

What to do if the laptop turns on for a long time and a black screen appears

Black screen and laptop take a long time to turn on? This may not necessarily be due to part breakage. First, you should remember all the last shenanigans done with the device.

If the device worked intensively for a long time, then it is most likely overheating. In this case, the laptop needs to be repaired by a qualified technician. Perhaps new programs or games were installed before that. After that, a reboot was performed, and the laptop did not turn on, then these may be Windows errors.

However, first you should pay attention to whether the device is connected to power.

If the laptop does not turn on when using only one battery. Perhaps he is simply discharged and there is no point in panic. If the charge is in full order, then it is worth connecting the computer to the network.

After the device was connected to the network, it turned on without any problems, then the problem lies in the battery.

Perhaps it needs to be replaced with a new one. But if the computer still does not work, you need to check whether all the plugs are in place and whether they come off. A wire may have been pinched or broken somewhere.

It is recommended that you check if the outlet is energized. Each laptop has a special light that signals the battery charge and connection to the network. If all the lights are on and the device still won’t turn on, the problem might be something else.

It could also be a problem with the hardware settings of the device. In this case, it is not necessary to contact a specialist. The basic steps to troubleshoot this problem can be done with your own hands without anyone’s help. To do this, you must reset the hardware settings. The following guidelines will help you cope with this task.

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Reinstalling the OP module

The image on the display may not appear due to problems with contacts, as well as due to a malfunction of the memory module.

In this case, this problem can be solved by:

removing the RAM module from the laptop;

after which, it is recommended to purge the connectors in order to get rid of blockages.

If there is only one RAM strip and at the same time there are several free slots available for it, you can change its connection place.

Important! This method can be useful if the device has previously been exposed to water. Before starting work, make sure that the equipment is completely dry. If there is still moisture, you need to wait a while to dry out.

Before you start extracting RAM, you need to read the detailed instructions and strictly adhere to these recommendations.

Instructions for removing RAM:

before you start working on disassembling the device, you must first disconnect it from the power source;

the next step is to unscrew the bolts that hold the cover of the compartment where the RAM is located;

Important! All bolts are of different sizes. Therefore, it is better to group them in advance by length, so as not to get confused later.

if there is no separate compartment, you will need to remove the back cover of the laptop (it is recommended to do this carefully so as not to damage the device);

RAM is attached with clamps on one side and the other, they must be bent;

only after that you can take out the RAM;

also do not forget about the purging of the connectors;

then you can swap them (if available);

then you can insert the memory module back;

Important! It should be borne in mind that it is necessary to insert the OP only at an angle of 45 degrees. In this case, it must be securely fixed in the grooves. It is recommended to lightly push the bar from above. This is necessary in order for the latches of the latches to work.

after which, it is worth putting the battery in place;

There are unpleasant cases when these machinations are not able to give the proper result. In this case, the last way out may be to reinstall the BIOS.

To cope with this task you need:

get to the manufacturer’s Internet portal;

in the search box, enter the laptop model without errors;

find and download the (latest) BIOS version.

The downloaded archive should contain detailed instructions. Following it, you can reinstall the BIOS.

In addition, the user should take into account that these reinstallation steps are only necessary as a last resort. To begin with, the most correct thing would be to contact the service center and rely on the professionalism of the specialists. After all, the problem with turning on the computer may not be in the BIOS at all, but in the video card or other details. In this case, the reasons can be very different.

These recommendations will help solve the problem of turning on the laptop and the appearance of a black screen in the event that the breakdown is not technical in nature, but the hardware settings are to blame. At the same time, you can save your time and money on trips and maintenance in expensive service centers. Since this breakdown cannot be called serious and you can deal with it yourself, without having the appropriate skills. m

Why is the laptop screen black?

When turning on the laptop, a black screen may appear for software or hardware reasons. The user himself, especially if he is a beginner, cannot always solve the problem, so we have prepared a material designed to help with this. And if you prefer to trust specialists, then contact our company for laptop repair.


The first thing to check is whether the power plug of the device is tight enough and whether the wire is damaged on bends, and also whether the battery is charged. Surprisingly, such simple problems often confuse users. If everything is in order, then check the following aspects point by point:

Battery performance. Connect the power to the laptop. The indicator should light up, indicating that the battery is charging. If it does not light up, then remove the battery and, using an eraser, clean the contacts on the laptop and on the battery if there is a semblance of plaque or oxidation on them. Then use up the remaining charge by holding down the power activation button. Insert the battery and try to turn on the device. If it does not turn on, then it is likely that the battery is out of order.

The ramps may become ineffective due to, for example, liquid spilled on the keyboard. Then a black screen appears on the laptop. To check the RAM, you need to disconnect the laptop from the network, remove the battery, and unscrew the bolts from the cover under which the memory is installed. Remove the modules and use the same eraser to clean the contacts. Put everything back and try to turn on the device.

Next, you need to check the video system. Check that the ribbon cable that connects the graphics card or motherboard to the graphics matrix is ​​working properly. To do this, you can connect a TV or a regular monitor to your laptop via HDMI or older VGA, DVI. If an image appears on another output device, then the problem is definitely in the backlighting of the laptop display. Only a specialist can replace it, this is a difficult task.

Also, a black screen on a laptop can mean problems with the operating system or drivers. Often, returning to a previous system restore point, resetting it (in the case of using Windows 10), or a complete reinstallation helps. Finally, you can try resetting your BIOS settings. This is done blindly, because the laptop turns on, but the screen is black. Press the power button, then press the key several times to start the BIOS. After a few seconds, press F9 to reset, then F10 to exit and Enter to save. Depending on which laptop model you have (HP, Lenovo, Asus, Acer, etc.), the algorithm may be slightly different. you need to press the right or left arrow to select Yes, or press the Y button to confirm. You can find out which button gives access to the BIOS from the instructions for a specific device.

Additional methods for solving the problem

It is worth mentioning in the article a few more methods that are considered extreme measures. You have to resort to them extremely rarely, but this is not a reason not to talk about them.

You can check the operation of the laptop hardware at the time of boot using POST. a special card for self-testing. Its purpose is to determine the reason for stopping the download or the normal operation of any components, including the screen. POST cards are available for laptops, which can be connected to USB or miniPCI connectors.

When the card is connected, when the device is turned on, codes will be displayed on its screen, each of which signals which component is being checked at the current time. As soon as a problem is encountered, POST displays information about it on the screen and stops working. From the instructions attached to the card, you can find out the decoding of the codes.

What to do if the laptop does not turn on and a black screen is on

The main possible causes of this problem:

Liquid spills on internal components and contacts.

How To Fix HP Black Screen. Computer Starts But No Display. Screen Not Working / Dim

Inadequate cooling resulting in overheating.

Damage to the display and related parts (matrix, loop).

Graphics accelerator issues causing black screen on laptop.

Many of these problems can be fixed at home with your own hands, but some are best left to professionals.

What to do if your laptop screen is black but it works

If the laptop is noisy, the lights are on, but the display is off, then you can try to reset the settings according to these instructions:

Disconnect the device from the mains, remove the battery and hold down the start button for twenty seconds.

Reinstall the battery, connect the power supply.

Turn on the device in standard mode. After that, the settings should be reset.

If it does not help, then it is reasonable to check the display for performance. Such a check has already been described above: you need to connect another output device (monitor, TV) through the HDMI, DVI or VGA port. If the image is displayed on it, then the loop or backlight problems are obvious.

You can also disconnect all external devices from the device. a mouse, flash drives, an additional keyboard, headphones, modems, and so on. Probably one of them conflicts and gives the indicated problem.

Replacement of spare parts

If the POST card is not available, but there are spare computer elements, then try replacing the ones installed in the laptop with equivalent ones. Attention: do this only if you have a clear idea of ​​how the laptop works, otherwise you can completely break it.

Change one element at a time and try to turn on the device. For example, RAM, hard drive and so on.

Why the laptop won’t turn on (black screen) but the lights are on

The main groups of reasons why such a problem may appear:

Damage to the south or north bridge of the motherboard due to overheating or mechanical stress.

Broken graphics card or processor.

Breakage or loss of RAM.

Problems with the hardware settings of the device.

Faulty loops responsible for connecting the laptop matrix with the screen elements.

In some points, you cannot do without replacing parts, and in some you can do it yourself. clean the fans from dust, remove possible obstacles to air exhaust from internal components.

The hard disk (hard drive) does not boot, the HDD is not visible

Some users confuse it with loading the operating system. When this defect appears, in comparison with the previous ones, it is usually easy to enter the BIOS. With such a malfunction, the laptop may behave differently. It may freeze during the BIOS splash screen, constant spinning of the cursor showing that the laptop is trying to boot. A cursor may appear on a dark screen and a message about the use of a non-system disk may appear.

The possible cause of this problem lies in the following points:

  • Hard disk malfunction (use of a non-working uninitialized controller, mechanical damage to media, bad).

To eliminate this defect, you just need to remove the old hard drive to use the new one.

  • Problems with a South Bridge that has a hard disk controller.

You can fix the problem by completely disassembling the computer and then replacing the south bridge.

Battery problems, laptop does not turn on when power supply is disconnected

In this case, it should be clear to the user that the device cannot operate on battery power. External power must be present because the laptop will not start without it. It can work for a moment and then go out again.

The laptop may not turn on for the following reasons:

  • Mainly due to an inoperative battery (usually there is no battery charge, the Everest program displays indications of high wear of this element).

To fix this problem, you need to change the battery. Do not repair it. There will be no sense from this, but only waste. You need to choose the right battery option for your laptop brand ASUS, Lenovo, Samsung or other.

  • Malfunctions in the controller that controls power supply, battery charge.
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To eliminate the defect, you need to completely disassemble the laptop, diagnose the battery charging circuits, check the keys and controller, change broken parts.

The operating system does not load. The laptop restarts while it boots.

It can happen at any time. Only the operating system is loaded first. At least 3 seconds should pass. It occurs for the following reasons:

  • The system is infected with viruses. This causes the computer to restart.

You can fix this problem by using an external bootable media and by checking the disk using the popular antivirus.

  • The operating system may have just crashed.

To fix this problem, you need to reinstall your operating system. This method helps in many cases. It is difficult to eliminate the defect in another way. The actions are not so complicated, an ordinary user can handle them. Routine reinstallation or search for causes of reboots.

  • I am having memory or processor problems.

This problem can be solved by replacing the faulty component. To do this, you can contact FixCentr.

  • In rare cases, the appearance of microcracks in the motherboard. This happens if the computer is under non-linear loads. It is pulled in opposite corners, bent.

The problem can be eliminated by diagnosing the board with coils, connectors and bridges. Then they are soldered, replace the faulty elements with new ones.

What to do if your laptop won’t turn on?

After reading this article, users will be able to independently, without the help of a specialist, deal with some of the simple problems that arise in Asus, Acer, HP, Apple, etc. laptops. To do this, you do not have to contact the service center. But if the problem is more serious, then it is better to contact the specialist of the FixCenter service center. You can do this in different ways: by sending a request on the website, write a message in the chat, or call by phone. These actions do not take much time, but there will be more opportunities to fix the laptop.

Let’s figure out the algorithm of what to do if the laptop does not turn on. If you ask a specialist from the service center that provides technical support, it immediately becomes clear that many users cannot correctly describe the malfunctions that have occurred. And this applies not only to unprepared users, but also to people who have a good set of knowledge and skills about computer repair. Perhaps for some, the information provided will seem elementary and self-explanatory. You need to remember these truths when breakdowns appear.

If you make an accurate diagnosis, then most of the case will be considered completed. The result of the work of the engineer depends on the correct description and explanation of the malfunction. For example: if the user cannot turn on the computer, or when the laptop is turned on, the screen is black.

No initialization (black screen when the laptop is turned on)

When you turn on the laptop, a black screen, when you press the main power button, you can hear the operation of the cooler spinning without stopping. He carries out high revs. Together with it, the light of the indicators of different buttons will turn on. They are on, but the computer does not boot and there is no light on the screen. There may be different options with the operation of indicators, only the cooler still works. The image does not appear on the display, the HDD indicator does not flash. Often users confuse this problem with the problem of the absence of a picture on the display and the presence of an image at the borders of an external monitor.

If a black screen and the laptop does not turn on, you need to look carefully, if there is no download at all, this does not mean that the matrix is ​​in a faulty condition and does not have images at all.

  • A problem arises due to a malfunction of the processor, memory (with poor contact in the processor, memory module, connectors, lack of supply voltages).

To solve this problem, you need to completely or partially disassemble the laptop and make its subsequent diagnostics. Check supply voltages, distort or replace these elements. If they are missing, then install.

To solve this problem, you need to flash the BIOS with a special disk. If it is not there, then you will have to completely disassemble the laptop, solder it, replace the necessary elements, BIOS chips, reflash using the programmer.

  • Problems with the Northbridge or GPU.

To solve the problem of a non-working video chip or north bridge, you need to completely disassemble the laptop and then diagnose the supply voltages, generate clock frequencies, replace faulty microcircuits.

The battery on the laptop does not charge (the charge does not increase in percentage, there is no charge indication)

From these parameters, you can determine that the network is supplying energy to the computer. The device can turn on if the unit is supplied with power. The operating system displays an icon that the computer is using the electrical network for power. The battery charging icon is not displayed. It’s not just a dead battery that causes problems like this.

This can happen due to the following reasons:

You can fix the problem by replacing it. Better to do so so as not to overpay a huge amount for repairs. This is a more reliable solution. The cost of batteries is not that high.

  • Malfunctions in the power and charge controller.

It can be solved by completely disassembling the laptop, diagnosing the supply voltages, replacing faulty parts.

  • External power supply requires additional power.

To fix this problem, you need to replace the supply unit with a more suitable power. To determine it, just look at the case on the entry on the laptop under the inscription Input.

Laptop screen does not light up when the power button is pressed

This can be said if there is no reaction when the user turns on the laptop. That is, the device is not active, the fan is not audible, the lights are not visible. It seems as if in front of you is an ordinary piece of plastic. When the laptop is turned off, the indicator showing the battery charge is on or off. This fact is immediately mentioned when describing the malfunction. This behavior can occur on a computer for various reasons:

  • The laptop does not turn on if the power supply (charging) burns out, there is no battery, it is dead or inoperative. When the button is pressed, you can see the light come on to indicate the battery charge. The laptop does not start up. The reason is: the battery is discharged or there is no voltage in the power supply.

To solve this problem, you need to install a new charger or power supply. You can find out about the cost of this device on the Fixcenter website.

  • There is no BIOS firmware or it has become broken. Need to flash BIOS using crisis floppy.

If it is absent, then you need to completely disassemble the laptop, then solder, replace the BIOS chips, reflash using the programmer.

  • There is no contact inside the power connector (there was a breakdown of the central contact, the connector came off the motherboard in parts or completely; the wire in the cable broke and other problems associated with the breakdown of the connector).

To successfully solve this problem, the connector needs to be repaired. If there is poor contact with the motherboard, then it is replaced. If the connector breaks, the wires break, it is repaired or replaced. You can find out the cost of this part on the FixCentr website on a special page.

  • Lack of firmware or use of broken firmware.
  • You need to look at the motherboard with internal circuits. The problem may have appeared due to a short circuit. Watching chains, a battery, a burnt-out microcircuit, perhaps a duty room.

To solve such a problem, it is necessary to completely disassemble a Sony or Asus laptop, make subsequent diagnostics of each supply voltage, generate clock frequencies, replace faulty elements.

  • The video chip, south or north bridge was short-circuited due to overheating (this happens in AMD, ATI, nVidia microcircuits), breakdowns in uesbi.

You can solve this defect by completely disassembling the laptop and make subsequent diagnostics of the supply voltage, generate clock frequencies, replace faulty microcircuits, replace faulty nVidia microcircuits, south or north bridge.

Shutdown, reboot when BIOS initialization and BIOS splash occurs

Some users confuse it with a reboot, which is started during the startup of the RAM. These reboots differ in the frequency of actions. In this case, the operation takes three seconds.

It is impossible to say how the laptop behaves in this case. You can talk about possible behavior in several cases:

  • The south bridge is out of pace. Usually, this is caused by a short circuit, breakdowns arising from the USB connector and breakdowns occurring in it.

To solve this problem, you need to completely disassemble the laptop, then completely replace the south bridge.

  • The processor, the north bridge is overheated, the cooler is clogged with dust, the radiator is loose. Because of all this, the fan rotates quickly and turns off in different ways.

You can solve the problem by completely or partially disassembling the laptop and then inspect the cooling system, clean the laptop from dust particles, check the correct heat sink.

  • The power supply does not supply power. The laptop is attempting to use the battery for starting. Since the battery is already low, the computer immediately turns off and the screen goes dark.

To eliminate this defect, replace the power supply. Better to use new parts. Information on can be found on the company’s website.

  • BIOS chip or firmware has gone bad.

You can fix this problem by flashing the BIOS. To do this, use the crisis floppy disk. If there is no sense in using it or it is not possible to use a floppy disk, you need to completely disassemble the computer in order to replace the damaged elements if necessary and then reflash everything again.