What to do
Next, perform this simple operation: disconnect the external power supply from the laptop, remove the battery, press the power button with your finger and hold it pressed for 20-30 seconds. This removes the residual charge from the containers and in some cases solves the problem.
Further steps are related to disassembling a mobile computer, therefore, they are performed at your own peril and risk. And only if the device is not under warranty. It is also very desirable to have experience in disassembling it, and most importantly. the subsequent successful assembly.
I will not dwell on the process of unscrewing and removing the caps in detail. If you are going to do this for the first time, search for the description on the Internet by typing into the search engine the query “name of the laptop model, for example, Asus x550dp, disassembly” or “Lenovo g570 service manual”.
So, take the motherboard out of the case and inspect it on both sides. Burnt-out elements, tracks, carbon deposits are signs of a short circuit. If you see something from this series, do not try to turn on the device until the short circuit is eliminated. In this situation, you also have a direct road to service.
Very often, faulty (short-circuited) elements cannot be determined by eye, and the presence of a short circuit is judged by indirect signs. Here are two of the most illustrative:
- When you press the power button of the laptop, the cooler jerks slightly or makes a couple of turns and freezes. By the way, it also starts up normally, but after a pause. waiting, when the processor heats up to a given temperature, it starts to rotate at normal speed.
- The power supply indicator goes off immediately when the power supply is connected to the laptop. When disconnected, it lights up again. This is how the protection of a serviceable power supply unit from overloading by an excessively large current consumption is triggered. For those who do not remember: a short circuit is a contact unintended by the design of the device with the lowest resistance in the circuit, which forms the shortest path for the current to flow. And according to Ohm’s law, the lower the resistance in the section, the greater the current.
Another symptom that in some cases can be caught without diagnostic tools is the heating of the elements of the circuit in which the short circuit sits (according to the Joule-Lenz law, the more current, the more the conductor heats up). Connect the included power supply to the laptop motherboard and, without pressing the power button, check the temperature of the elements by hand. In the event of a short circuit, you can feel heating, sometimes quite significant.
If indirect signs led you to think about a short circuit, further research should also be stopped and contact the service. If not (this, by the way, does not exclude that there is a short circuit), go ahead:
- Check the reliability of all internal connectors, especially if the problem arose after cleaning or upgrading the laptop, which was accompanied by disassembly.
- Reset BIOS settings by disconnecting its battery for 10-15 minutes. Of course, provided that the battery is not soldered, but connected through a connector or inserted into a socket, as on desktop PC motherboards.
What does “not turn on” really mean??
In a narrow. and real sense, non-inclusion is only the complete absence of signs of “life” when the power button is pressed. And sometimes. states close to this:
- The laptop does not respond to the button, but is charging the battery.
- Startup starts, but stops almost immediately.
- The machine turns on, but not completely, getting stuck at one of the early stages of the start (after pressing the power button, only the fan starts up and sometimes the indicators light or flash).
- Instead of turning on, a cyclic reboot starts.
Why would you differentiate between this? At least so that you can correctly describe the problem in technical forums, where, perhaps, ask for help. The reasons for these conditions are different, so the accuracy of the answers depends on the words you use to describe them.
All the listed symptoms of non-inclusion are caused by hardware problems, because, judging by the time of occurrence, they occur before the OS starts loading. At the same time, there are no images or inscriptions on the screen. The appearance of at least a splash screen with the manufacturer’s logo on it indicates that the computer still turns on, and the problem lies in something that is beyond the scope of this article.
Everything that you read further concerns situations when the reason for not turning on the laptop is not known to you. If the device stopped starting after having tasted tea (coffee, beer, borscht and other liquids) or flew from the table to the floor, the only correct tactic is to contact the service.
The absence of any signs of starting when you press the power button occurs in the following situations:
- There is no voltage at the outlet, and the battery is too low for a normal start.
- Defective external power supply including power cord. Energy does not flow to the board or does not reach the required threshold. Sometimes. the power supply is incompatible with the computer if it was purchased separately.
- Elements of internal power circuits are faulty.
- Short circuit in devices.
- Bad contact in the connectors connecting devices to the motherboard.
- Low RTC Battery Voltage (BIOS).
- BIOS flashing.
“Brick with a keyboard”: why the laptop does not turn on and what to do
Given the complexity of the device, I will say right away that the situation is not easy. In many, very many cases, it is not possible to solve it at home, but if there is at least a small chance of getting by with “little blood” (more precisely, at low cost), why not try to cope on your own? Today we’ll talk about the reasons why the laptop does not turn on, and what to do about it.
The laptop does not turn on but is charging the battery
The source of the problem in such cases is most often:
- BIOS (firmware. bootloader rally or flash memory chip itself).
- RTC battery.
- Multicontroller (EC / KBC-controller) and piping.
- Chipset (on old machines. south bridge, less often north, on modern. platform hub) and strapping.
- Failure of the lid closing sensor or sticking of the monitor power button (on older models) The computer “thinks” that the lid is closed and does not allow starting or waking up from sleep.
Checking at home without tools comes down to the same thing as described above, except that you can not focus on the search for KZ: here it, rather, has nothing to do with it. And if it has something to do with it, then it is not so clearly noticeable.
Cyclic reboot immediately after switching on
In more than 90% of cases, the culprit is the BIOS, in less than 10%. the RAM. The problem is solved by flashing the first one on the programmer or by replacing the memory.
“Underconnection” or lack of initialization
In such cases, a power-on failure should be differentiated with a malfunction in the video subsystem, when the laptop essentially works, even loads the operating system, but does not display an image on the screen.
The difference in the “clinic” of these cases is easy to notice if you pay attention to the details. In case of problems with the video, the hard disk turns on and works, which can be seen from the activity of its indicator, sometimes you can hear the sounds of Windows startup, the cooler from time to time resets and picks up speed.
When there is no initialization, work is limited to rotating the cooler at maximum speed (the speed control system is inactive), the drive does not start, and the OS does not boot. The reasons for this are:
- BIOS crash again.
- RAM failure.
- Failure of the processor or its power supply system.
- Lack of support for the processor by the motherboard (for example, after an upgrade).
- Northbridge malfunction (on older laptops).
If the problem is not related to the breakdown of the board elements, it is quite simple to solve it. by replacing the memory or updating the BIOS, throwing in another, obviously suitable processor.
If instead of loading Windows, a black screen is shown with some inscriptions (errors)
- first, see what kind of error is displayed. If you managed to write it down (photograph it). then you can try to look for a solution. For example, there are often problems with finding a boot disk (often when connecting a second HDD or SSD, when updating or reinstalling Windows, when the laptop is not shutting down correctly, etc.);
Error while loading Windows on black screen background
Startup recovery. Troubleshoot problems preventing Windows from loading
Laptop does not turn on: how to restore it to work
The breakdown of a laptop, most often, occurs suddenly, when we are not expecting it. It seems that only yesterday everything was in order with him, he worked, but in the morning he does not turn on for nothing.
There are a lot of questions in this category (especially now, when laptops have become more popular than conventional stationary PCs). In general, since many users usually do not very specifically describe the problem, I immediately want to say that the laptop may not “turn on” in different ways:
- may not react at all to any pressing, not “blink” LEDs, etc.;
- or it can react to the power button, reach the OS boot and show some kind of error.
Actually, based on this, I will build an article. I will consider below the various options, and what can be done in each to restore work. The article, if it does not repair your equipment, will help to understand the problem and save a certain amount of money.
If the LEDs light up, the laptop is noisy, but there is no image on the screen
- first of all, I recommend connecting an external screen to the laptop and see if there will be an image on it. If it will be. the problem is probably related to the laptop monitor, if not. then most likely there are problems with the video card or mat. device board. How to connect an external monitor to your laptop
- then pay attention: the screen is always black, or when turned on, it still blinks (for a second or two), and then the image disappears. If at first the image is visible, but as soon as Windows starts loading. disappears, most likely, the problem lies in the “broken” system (see the next subsection of this article);
- then carefully look at the surface of the screen: the backlight often burns out, and because of this, nothing is visible on the screen. Try shining a flashlight or desk lamp on the screen. maybe you will see a picture (an example is presented below). On average, backlight repair is not that expensive (and it is not uncommon when the reason for this lies in the wear of the loop, the cost of which is a penny.).
Backlight burned out. the image is visible only when the table lamp shines on the surface of the monitor
some laptops have special function keys to turn off the screen (moreover, there are laptops that remember this enabled setting even after the device is restarted!). For example, on ASUS laptops. this is a combination of FnF7 buttons.
ASUS laptop. screen off (function key)
For starters, don’t panic! Much more damage can be done by hasty action. In some cases, you can solve the problem yourself. Try to remember after which it happened, what happened the day before, whether there were any errors, installed any software, etc. Sometimes, it helps a lot in solving!
By the way, I’ll add right away that if your laptop is under warranty. I do not recommend opening it, removing the hard drive, and generally carrying out any manipulations. All this can lead to a denial of warranty service.!
Very often the laptop does not turn on due to a dead battery.
over, I note that even if you just charged it a couple of hours ago. it is not a guarantee that she could not sit down (for example, the laptop could independently wake up from sleep mode, start a system update, and drain the battery in the process. Unfortunately, this is not uncommon).
I’m not even talking about the fact that the battery may simply be worn out and not provide the necessary currents for the full operation of the device.
If the laptop does not respond at all to any taps, none of the LEDs are on.
This problem often occurs due to a lack of power. Let’s go through the steps that need to be checked and done:
- if you are trying to start the laptop on battery power. then connect it to the power supply and try to turn on the device again;
- Pay attention to whether the power indicator (LED) is on when the laptop is connected to the network. If not. then this may be the cause of a failed charger (broken wire, broken connector, etc.). Try removing the power plug from the socket and plugging it back in;
Indicator of power, battery, Wi-Fi, etc. on the body of the device
try to remove the battery from the device, then connect it to the power adapter and turn on the laptop (often, if there is a problem with the battery, the device starts working normally).
Lenovo B70. a button to enter the BIOS next to the power input. It is most convenient to press with a pencil or pen
In principle, if all of the above did not help, then it is difficult to advise something else in this case. I recommend taking your laptop to the service for diagnostics. The cause of a breakdown can be, like complete nonsense (gone power wiring, cheap repairs), or a rather serious reason, for example, a burnt-out microcircuit on the mat. board.
If, after turning on, the laptop immediately turns off or restarts
- disconnect everything you can from the laptop: mouse, external drive, headphones, etc.;
- Pay attention to the battery: if the battery is worn out, then its capacity may not be enough for the full operation of the laptop. Try to connect the power adapter (it will also be useful to test the laptop without a battery);
- such symptoms are also typical for overheating of the device: if something is wrong with the cooling system (with the CPU or video card). then when Windows boots up, the temperature can suddenly start to rise and the laptop turns off, in order to protect itself (in this case, the cooler inside the device should work noisily). The topic of overheating is quite extensive, I recommend that you read the material in this article: https://ocomp.info/greetsya-noutbuk.html;
- By the way, restarting the device can also be related to damage to the Windows OS. virus infection, etc. For testing, I recommend trying to boot from the LiveCD. if the download takes place in normal mode, and everything works, then most likely the problem is related to the current installed Windows operating system;
- perhaps the problem is related to the closure of the contacts to the mat. the device board (for example, when the USB ports, HDMI ports burn out. Also, the contacts are often short-circuited when the laptop is flooded with any liquid). Remember, the day before, if you did not connect any devices: were there any errors, or a small spark?
Of course, I haven’t considered a lot, but on such a streamlined question, it’s probably quite difficult to do this. Having run through the options presented above, you can cut off and eliminate some of the reasons due to which the laptop could not turn on.
Other options for malfunctions
If the laptop does not cut in, perhaps the reason lies in the following:
- Short circuit;
- Broken power keys.
The first and second options are not a verdict. When the laptop does not respond to the power key, it is not necessary to immediately carry it to the workshop.
The laptop does not cut in, the indicators are off: ways to solve the problem
If the laptop does not cut in, the indicators do not light up, you have to urgently solve the problem. From time to time, work remains unfinished or it is required to check information on the network. In this case, you cannot hesitate, and you should immediately run across to the instructions.
If instead of loading Windows, a dark screen with some inscriptions (errors) is shown
- first, take a look at what the error is displayed. If you managed to write it down (photograph), then you can try to look for its solution. For example, there are often difficulties with finding a boot disk (often when connecting a second HDD or SSD, when updating or reinstalling Windows, when the laptop is not shutting down properly, etc.);
Error while loading Windows on a dark screen
Startup recovery. Troubleshoot problems preventing Windows from loading
For starters, don’t panic! Even more damage can be done by hasty action. In some cases, it is possible to solve the problem without the help of others. Try to remember after what happened, what happened the day before, were there any errors, installed any software, etc. Sometimes, it helps tremendously in solving!
By the way, I’ll add right away that if your laptop is under warranty, I do not recommend opening it, removing the hard drive, and, in general, carrying out any manipulations. All this can be a prerequisite for the refusal of warranty service.!
Very often the laptop does not cut in due to a dead battery.
over, I note that even if you just charged it a couple of hours ago, this is not a guarantee that it could not sit down (for example, a laptop could wake up from sleep mode without the help of others, start a system update, and drain the battery in the process. Unfortunately, this is not uncommon).
I’m not even talking about the fact that the battery may simply be worn out and not provide suitable currents for the real operation of the device.
The multicontroller is out of order
When the laptop does not respond to commands and does not turn on due to a faulty multicontroller, it is worth understanding the reasons:
- Overheating of the board;
- Increased humidity level.
For example, a Lenovo laptop is not responding and the tester has shown that the voltage is below normal. This indicates the incorrect operation of the multicontroller. If the laptop does not cut in and has previously been in contact with water, the service center may announce the need to replace the element.
- Using a different laptop;
- Installation of a used controller;
- Application of the latest part.
If the power indicator is off, the easiest way is to abandon this technique. An Acer laptop or another on a substitution may come in handy. But the equipment can store valuable information and the option does not come up. When the controller is broken and the laptop does not turn on, almost everyone tries to save money by installing a used item. You should be prepared for the fact that it will need firmware. The board works according to these parameters.
If the power light is on but blinking, the controller is not running properly. It is clear that the firmware can only be carried out in a service center. When the power indicator does not respond and the discrepancy is precisely covered in the controller, the best solution is to install the latest analogue.
The above is what to do if the laptop did not start to cut it in and the indicator does not light up. There are main and additional prerequisites. The discrepancy is solved using the instructions.
Power key malfunction
If the laptop does not cut in the first time and, in general, the power key may have finished doing its functions. Fortunately, the market sells the latest parts and you can pick up the latest component. Some will prefer to use a donor. Unlike a chip, you don’t have to create firmware. Difficulty with a used part can only be in the quality of components.
- Removing the keyboard.
- Release the cover.
- Dismantling an old part.
- Button installation.
When looking at an Acer laptop, the keyboard is not necessarily removed. It is enough to pry off the bar in the upper part. For this, a sharp object is used. Since we are talking about plastic, you should be careful with the clamps. If you look at the early models of Acer, they use two fasteners on the sides. The lid rises up to silk.
- Damage to plastic;
- Sharp movement with the tool;
- Prying off the lid from the top.
Almost all Lenovo, Acer, ASUS models have a panel detachable from the keyboard side. If you push a screwdriver from the screen, then the possibility of breaking the fastening and deformation of the panel increases. After that, it is unrealistic to return the item. When using a laptop, part of the board will be constantly visible. This not only looks scary, but also shortens the life of the equipment. Dust will fly through the hole on the internal modules.
When the cover is removed, the Power indicator is visible. It is located at the top and a wire leaves the node. It is extremely small, therefore it will not be possible to move the lid over a huge distance.
- Inspection of the attachment point.
- Loop integrity check.
- Fastener assessment.
When burned out, black spots appear on the plume. Burns are also often seen specifically on the board.
Input devices can be disconnected using the tools:
- Screwdriwer set;
- Soldering iron.
If we consider an HP laptop, the cable does not have to be unsoldered thoroughly, a soldering iron is not required. On the one hand, it is convenient and there is a possibility of rapid replacement of a part. Fastening occurs due to a narrow clamp. On the other hand, contacts are considered to be unreliable.
An important fact! Soldered cables stay much longer. The isolation level is higher.
- Releasing the board from the input device.
- Testing contacts.
- Removing the power key.
The board is disconnected through the largest contact, most often it has a snow-white color. Contacts are tested using a tester, multimeter. Experts advise to inspect the elements in pairs. In this case, the device is transferred to the “resistance” mode. A short circuit indicates that the board can no longer be used.
- Using a similar board;
- Buying the latest explorer.
With the board removed, you can inspect the power key socket. A huge amount of dust accumulates on a laptop, and this does not go unnoticed. Despite the moderate size of the indicator, there may be a large tuft of hair under it, which interferes with the operation of the key. The solution, of course, is to remove all the trash.
- The integrity of the loop is not checked;
- Installing a key with a small wiring.
The contacts on the boards may be in good working order, but the loop gives errors. The probable reasons are attributed to mechanical action, an increase in temperature. To solve the problem, cleaning is done.
For the procedure, a complete analysis and inspection of the element is done. The cable most often breaks next to the power key.
- Detaching a part.
- Removing the seal.
To remove the insulation, a previously prepared scalpel is used. The cut off part of the train is not thrown away, it will still be needed. Glue is required in order to disconnect the contacts. For this purpose for us, the seal is brought to the contact. A small amount of glue is applied to the surface. If the end of the part is not cleaned, the new part will not take root.
Connected external peripherals
Sometimes connected peripheral devices can also lead to problems associated with the difficulties of starting a laptop. Therefore, in order to diagnose this problem, you should disconnect all external devices that are connected to the laptop: printers, flash drives, external drives, etc. This behavior of the mobile device may be the result of a conflict with the connected device.
If the problem disappears after turning off all external devices, then you need to determine which of them is causing the laptop to fail to turn on. But if the problem is not overcome, then the diagnosis should be continued.
Or, several devices can be connected to the laptop at once, one of which introduces a conflict
Possible reasons for the problem under consideration include malfunctions of the power button. Its location is not the same in different laptop models. It is most commonly seen next to the keyboard at the top of the laptop case.
To cope with the problem on your own, you need sufficient experience in repairing a laptop, and therefore in this case it is better to carry your computer to a service center. And the reasons for the failure in the case of the button may be a break in its loop or copper contacts that have lost their properties.
The laptop does not turn on. the power supply is guilty
Often the culprit for a failure when turning on a laptop, like any PC, is a damaged power supply or a damaged cable. It does not supply power in the required amount to the mobile device or does not supply it at all, since it is completely out of order. The power supply can supply significantly less voltage to the laptop input than necessary.
For example, a number of laptop models require 19.5 V, and the faulty block outputs, for example, only 9 V, so the laptop cannot start. You will need a tester here to measure the voltage supplied by the unit. In any case, the faulty power supply should be replaced with another original one or with a universal one that allows you to adjust the required power level.
An equally common culprit for problems with turning on a laptop is the battery. If the laptop with the battery removed is connected directly to the network only using the power supply and at the same time starts without errors, then the battery is the cause of the failure.
Sometimes it happens that the laptop does not want to start with the battery removed, then it is necessary to look for a replacement for the failed battery. And although the laptop “knows how” to start and work without a battery, this mode of operation is very dangerous. In this case, you will need to turn it on from an uninterruptible power supply.
Black display when the laptop is on
Sometimes they say that the laptop starts up, but the display does not show anything. it remains black. In this case, the indicators light up, the operation of the cooling system components is audible (cooler noise), but the monitor display turns out to be indifferently black.
The reasons for such a strange behavior of the laptop can be anything, up to a failed graphics card, since it is she who forms and displays the image on the display. The reason may also be in the display itself.
VGA cable and its connector on a laptop for connecting an additional monitor
To check if the laptop monitor was the culprit for the failure, you need to connect a known working monitor to the laptop, having previously found the VGA or HDMI port. If the additional monitor at the start of the laptop shows the entire boot progress, then the problem is in the laptop’s native monitor.
However, if the additional monitor does not show anything, then the problem may be in a faulty video card. In this case, you need to carry your laptop to the service center.
Why the laptop won’t turn on.
If your laptop does not turn on, the problem can be at both the hardware and software levels. To correctly diagnose the cause of the problem, you need to correctly imagine the boot process of the computer device.
Let’s agree that today we will refer the problem to the stages before the operating environment is loaded, since the failures of this stage of the computer boot constitute one large separate topic. By the way, earlier we have already considered the solution to the problem with shutting down the laptop.
Let’s just say that these two topics overlap and it is sometimes difficult to distinguish the problem of loading the operating environment from the problem of turning on the portable device itself.
A hardware problem with turning on a mobile device is also incomplete turning it on. In this case, the start of the laptop is observed with the monitor turned on, on which messages are displayed with the results of the system self-test.
Each of the messages appears on a black display if the option to show them is enabled in the BIOS. However, at some stage of the self-test, the laptop starts a sudden reboot. Most often, overheating is to blame for this behavior of the device, and therefore it would not hurt to open the laptop and clean it from dust inside.
We also add that the boot of the computer, carried out by the I / O program, is accompanied by beeps if the BIOS detects a boot error. Also, this program displays an error message.
We serve brands
The culprit can be either a small transistor or a video card chip. In any case, you cannot do without laptop repair engineers, because you cannot find and fix such a malfunction at home.
Why does my laptop click and won’t turn on when I turn it on?
If you turn on the laptop, you hear something clicks, the fan starts spinning, the lights come on, but nothing is displayed on the screen, but the device does not work. It’s just that the voltage is applied, and some devices start to work independently of other equipment, and an erroneous opinion is created.
The reason for this, most likely, is the exit from standing one of the elements of the laptop motherboard. It doesn’t work and prevents the system (Windows or Mac OS) from starting. Such a malfunction is very common, but it is not always easy to identify exactly a specific part.
Laptop clicks and won’t boot when turned on
If your laptop clicks and does not boot when turned on, then do not despair. You just need to contact specialists who can find the cause of the breakdown and eliminate it.
|Free diagnostics (in case of refusal to repair 500 rubles)|
|Urgent diagnostics. 1000 RUR|
|Cooling system prevention (cleaning from dust, replacing thermal interfaces, testing)||1500 rub.|
|Prevention of the cooling system with replacement of the cooler (fan)||2500r.|
|If the total amount of repairs exceeds 5000 rubles, prevention is Free!|
|BIOS firmware||from 2500r.|
|Repair of the power circuit (after power surges, etc.)||from 2500r.|
|Repair after a fall (impact)||from 3500r.|
|Repair after flooding||from 1500r.|
|Replacing the matrix (screen)||from 3500r.|
|Replacing the power connector||2500r.|
|Replacement of the south bridge||6500|
|Replacement of the north bridge||6500|
|Replacing the video chip||6500|
|Installing Windows XP SP3 Pro or Home operating system installing drivers||1500p.|
|Installing Windows 7/10 Home Advanced Driver Installation||2000p.|
|Windows 7/10 Installation Professional Driver Installation||3000p.|
|Installing Windows 7/10 Maximum installation of drivers||4000 rub.|
|Installing Drivers||from 300 rubles.|
|Optimizing the operating system||1200r.|
|Cleaning the system from viruses (any complexity)||1200r.|
|Battery recovery||from 2500r.|
|Diagnostics after unsuccessful (low-quality and illiterate) attempts to repair other services||0p.|
|Free consultation with an engineer after repair|
in each case are individual, both upward and downward (especially when using used parts).
The minimum cost of repair after flooding excluding the cost of the keyboard, and other modules after moisture ingress
Lenovo Self-Help. Laptop Doesn’t Power On (Updated 2019)
And in this article we will try to figure out what happens if the laptop clicks on startup and does not turn on. After all, the most important thing is to understand when all this is happening and to reveal the true reason.
If the laptop clicks and the operating system does not load
The second variant of a similar malfunction is when the laptop turns on, you see some information on the screen, but it clicks and the operating system does not start. Here, most likely, the problem will be in the hard drive. It broke, cannot spin and emits characteristic clicks.
And if the hard drive does not work, then the operating system will not start. And here begins a whole range of work that needs to be done in order to return the laptop to a working condition.
First, you need to replace the hard drive with a new one.
Secondly, install the operating system, drivers and utilities on it by downloading them from the manufacturer’s website specifically for your laptop. Also install software to make it work.
And thirdly. Of course, your hard drive, which stopped working, had valuable information that needed to be recovered. All this will take up a lot of your time. The service technician will gladly take care of all your hassle and return your device to you in working order.
Any technique tends to break down. This can be due to both the human factor (mishandling) and the development of individual elements that simply cannot work forever.
Hello! Here’s the problem! The laptop worked without a battery, from the mains. In the evening it was turned off and unplugged from the mains. It lasted for 3-4 days. Then they tried to turn it on. The following happens: when the power button is pressed, 1 click (from the speaker) is heard and the power button blinks 1 time. The laptop itself does not turn on and does not show any signs of life. What could it be? and the price of the repair? Thank you in advance!
Good afternoon, Maxim. You need to contact the service. At the reception, we will connect our charger and check. Perhaps there is a problem with the power supply itself, perhaps with the power connector, or the motherboard is faulty. Call 943-39-14
I work once, as usual, at a laptop, put it into hibernation, and after twenty minutes I turn it on. it turns on, but there is no image, and the LED on the cap will light up. will disappear, after a couple of seconds it will light up again. disappear. I tried, according to the instructions from the HP website, to remove the battery, hold the power button for 15 seconds, then turn it on again without the battery. no effect. It’s been three months since then. What is the malfunction and how much will the repair cost?
The laptop is 4 years old, I have never changed the thermal paste. How much will this pleasure cost??
In addition, the VGA output does not work in the laptop from the date of purchase, although HDMI does. Is it possible to fix VGA and for what money?
I would be grateful for your advice!
Good afternoon, Peter. In any case, preliminary diagnostics are required. Judging by the description, the north bridge (the chipset on the motherboard) is out of order. The replacement cost is 6500r, the warranty is 6 months, the repair time is 3-7 working days. With VGA, the problem can be viewed after repair, but there is a high probability that the problem will resolve itself after replacing the chipset. If you have any questions, call 943-39-14
Such a situation: I was sitting watching a movie, the laptop suddenly turns off and did not turn on again. An hour later, turn on the test again and this is the reaction: the power button is on, and the cooler starts to work at high speeds, and there are no more signs of work
The main problems with turning on the laptop
They can be divided into 3 groups. related to the hardware part of the device, power supply and software.
What to do with black screen when turning on Lenovo laptop
If a Lenovo laptop does not turn on. a black screen or crashes into blue, the power key does not work, there are other problems, you do not always need to contact a service center. Sometimes it takes basic user action to turn on a Lenovo laptop and get it working. This guide will cover what to do if your Lenovo laptop won’t turn on and what diagnostic and repair methods you can use.
Black screen at startup, but lights come on
The reason is most likely that there is no image on the screen. As mentioned above, it is either the LEDs in the matrix backlight burned out, or the loop that connects the graphics adapter and the display is frayed. If the problem is in the cable, then usually when the angle of inclination of the top cover is changed, the image on the display may appear briefly.
To determine if the LEDs have burned out, you need to take a powerful flashlight and shine it on the display. In good light, you can see the image.
A broken cable can be replaced, including by yourself. Usually a laptop is assembled according to a modular scheme: both on the motherboard and on the matrix there are slots where the ribbon cable is connected. The most difficult thing is to get a suitable train, especially if the laptop was released several years ago.
Burnt-out LEDs are not as frivolous as they might seem. The point is that they do not change: the entire matrix must be replaced. This is a little expensive, since its cost can reach a third of the device, even if you find used components.
You can also connect an external monitor or TV via the HDMI port, which is found in any modern laptop. If there is an image on the external display, then there is a problem with the laptop screen. If there is no image, one of the possible problems may be a breakdown of the video card, which because of this does not give a picture.
How To Fix Repair Lenovo Laptop That Wont Turn, No Power, Freezes or Turns Off During Startup
Possible causes of breakdowns
There are some problems when the laptop does not turn on completely. Consider how to diagnose them and what can be done in such a situation.
At startup, the screen is black, the coolers are working, but the indicators are off
The reason for this situation is often a banal glitch. In this case, it is enough to turn off the power supply and remove the battery for a few seconds. After turning on the laptop, it is likely that it will start as usual.
The second, less common reason is that the BIOS settings are lost and the laptop cannot correctly determine the connected equipment. In this case, you will have to reset the settings “blindly”, since there is no image on the screen. Although it is possible that when the BIOS interface is turned on, the picture will appear.
To switch to this mode after restarting the computer, press the F2, F8, Escape or Delete button several times (which one depends on the model of the motherboard and the BIOS version embedded in it). After you hear a light click, press the F9 button to reset the BIOS settings, and then F9 to save the changes and restart the device.
Instructions for diagnosing power problems
The first thing to check is the power outlet where you usually plug your laptop power adapter. Plug in any other device here to determine if it works.
It is better to use a multimeter to test the power supply. The red pin must be inserted inside the laptop plug, where there is a connector for a similar pin in the device case. Place the black pin against the outside of the connector. The operating voltage of the power supply is usually 15 to 20 volts. You can also use a similar power adapter. If at the same time the LED on the laptop lights up, indicating that the battery is charging, then the problem is in the adapter.
Some laptop models do not turn on if the battery fails. the cells are exhausted or the controller that checks the charge level is burned out. You can remove the battery and start the laptop from the power supply. If it turns on, there is a problem with the battery. It is impossible to repair it. just change it to a similar one.
And another reason that the laptop does not start can be trivial. the owner simply forgot to charge the battery. Try to charge the device and turn it on after a couple of hours. Cleaning the contacts with an eraser can also help. both on the battery itself and on the laptop.
If the laptop does not respond at all to pressing the power button, then most likely it was she who broke. An inoperative laptop, when trying to start, should at least emit at least a faint click. You can try to fix the button, but for this you need to tear apart the laptop. The design of this part is primitive, so the best repair option is to completely replace it: if something inside is physically broken, it is no longer possible to fix it.
The following nodes can be source of trouble:
- The outlet where you plug the laptop power adapter.
- The power supply itself, not charging the battery.
- Battery power controller not supplying voltage to cells.
- Depleted cells that no longer take charge.
- Power button that prevents the device from turning on.
If you cannot fix the problem yourself, you need to contact a specialist.