The laptop suddenly turned off and does not turn on


Hello! I used all your methods, nothing came of it, even the processor changed and the hard disk changed, but the result was not.
In short, my ASER notbook turns off every 30 minutes, but if I make it sleep every 25 minutes and turn it on, then another 30 minutes are added.
This is the way I use it.


Hello, I have an Acer Aspire 3 laptop and when I play, for example, World of Tanks, I very often press the letter W or D to drive. And when I press it, a black screen instantly appears, although the light is on, I have to turn it off and on through a direct button on the keyboard. BUT sometimes after pressing (as I already said) a black screen appears and after 3-5 seconds the Acer inscription appears (as it always happens when turned on) and after that an inscription appears with the No Bootable Device pattern, and this inscription appeared before me very often (when I still had a blue screen of death with the inscription Critical Process Died and, by the way, it also often appeared and it began to appear after I installed the SSD despite the fact that the HDD had not been removed since there was room for it). Most interestingly, the Death Screen began to appear after the touchpad on the laptop stopped working. I watched the video on YouTube, they said that the Death Screen may appear due to a driver malfunction. But now it seems to appear less often (but I did not fix the touch panel), so I switched to the shutdown problem, and by the way, I am now writing this on a laptop and, to be honest, I am afraid that it will turn off again, but I write when running on battery power, but when I do something from the network (as I already said) when I pressed any button, a black screen appeared, but it did not make any sounds (never), but just a black screen appeared. And a little later, out of anger (because I lost) I hit my desk 5 cm from the laptop and even then a black screen appeared. I didn’t clean, didn’t lubricate, and didn’t change the thermal paste (since I was lazy and thought that everything would go away by itself), BUT NOW I WILL DO THE SAME AS I STARTED THINKING INTO THE HEAD. Waiting for your reply.


Five minutes after turning on the laptop, the monitor goes out and turns off


The question is such an HP laptop when the internal hard drive is connected, the laptop does not turn on, I pull out the hard drive, it starts.
What could be the problem


maybe the hard drive has crashed, or maybe the motherboard has died


Hello. Acer laptop, when playing, the laptop turned off abruptly with a characteristic click, but it does not turn on anymore. The blue light (which is not the power light) flashes when the power button is pressed, but no more signs of life


I bought a new ASUS laptop, dropped it out of bed 5 months later, after that, if you turn off the charging, it can turn off by itself at any time. On charging, it does not turn off.
Sometimes without charging it works all the time, sometimes it is cut down after 5 minutes of work, maybe after an hour or more

laptop, suddenly, turned, does, turn

Disconnects from the battery

Does it work normally from the network? The average battery life for a laptop is 2-3 years. Uninterrupted operation depends on the type of battery, capacity, operating conditions. At the same time, the average laptop lifespan is 6-7 years.


Users often acquire viruses by clicking on spam links and going to questionable sites

Decision. Install a version of one of the antiviruses. For example, antivirus from Kaspersky, ESET Nod 32 or Dr.Web. Update its bases. Do a deep virus scan on your laptop.

6 reasons why a laptop suddenly turns off

The laptop is clogged with dust All laptops are equipped with a cooling system, which is represented by a fan and a heatsink. In advanced cases, dust can reach a layer of 5-10 mm, which causes the processor and other components to overheat, and at the peak of the laptop overheating, it turns off itself.

The laptop spontaneously turns off during operation. unpleasant situation. This article describes several common causes and how to fix them.

The laptop is clogged with dust

The laptop is equipped with a cooling system consisting of a fan and a radiator. The fan blows around the radiator grill, which has many iron plates closely spaced for cooling. Dust gets stuck between them, forming a felt, the thickness of which reaches 5. 10 mm in advanced cases. Therefore, the processor, video card and other components overheat.

Decision. The best option. this is to contact the service center to avoid damage to parts. At your own risk, you can clean the laptop from dust yourself:

  • unscrew the screws on the back panel;
  • remove the cover;
  • Use cotton swabs to remove large pieces of dust from the cooling system. Remove its remains with a can of compressed air or a vacuum cleaner with a “blow-off” function;
  • clean the fan using the same can of compressed air;
  • put the laptop back cover back in place and screw it down.

Symptoms of a Bad Battery:

  • the charge level is incorrectly determined;
  • the indicator does not detect the battery;
  • When the power plug is pulled out, the laptop turns off, does not work on battery.

Decision. Contact a service center for battery diagnostics. Replace it with a new one.


Placing a laptop on our lap, laying it on a blanket, fluffy blanket or thick tablecloth, we provoke it to overheat, because the air inlets inside the case are blocked.

Decision. Use your laptop on a hard surface. We also recommend using a laptop cooling pad. Inside it there are fans that take cold air from the environment and supply it from below to the laptop. The flow of air from the laptop cooler cools the internal components of the device. The temperature drops by 5-15 degrees.

The stand has a slight inclination, it is more convenient and comfortable to work on the keyboard.

Damage to the motherboard

Motherboard. the main body and main board of the laptop, which houses its main components. In case of mechanical stress on the laptop, the motherboard can be damaged, leading to breakage.

The main breakdowns requiring repair of the laptop motherboard are as follows:

  • malfunction of the input-output ports (USB, headphone jack, FireWire ports, etc.);
  • malfunction of the video adapter (built-in or external discrete);
  • damage to integrated devices (sound and network controllers, modems, etc.) due to electrostatic discharge or other causes;
  • problems associated with the cooling system (overheating and failure of bridges, video cards or processor);
  • the consequences of poor-quality power supply (failure of power controllers, reflow or burnout of power connectors);
  • mechanical breakdown or liquid damage (flooding);
  • incorrect user actions (self-assembly and disassembly of the device).

Decision. Repair or replacement of the motherboard is carried out by the specialists of the service center.

Recommendation: keep an eye on the general condition of your laptop, it will last you longer.

Watch the video on how to disassemble and thoroughly clean the laptop

Laptop freezes when turned on

For example, a dark screen with a blinking cursor, or stuck on the splash screen at startup.

In this case, problems are likely:

In turn, the cause of problems with the hard drive can be lack of formatting, bad blocks, lack of connection, etc.

It is not so easy to establish the causes on your own and eliminate them. It is best to diagnose your laptop at a service center. Based on the identified causes of the technical problem, the specialist will offer an adequate solution.

Laptop won’t turn on. black screen

Rather, the machine is trying to start, as the user sees and hears the operation of the hardware.

The indicators light up, the cooler turns on, the CaspLock, NumLock buttons light up and do not go out. But the screen remains black, and the indicator does not start, indicating that the hard drive is working.

What could be the reasons?

  • processor or memory problems;
  • BIOS firmware defects;
  • breakdown of the north bridge of the laptop.

If the main symptom is a black screen, then the reason most often lies in the inverter of the laptop matrix or the breakdown of the backlight.

In this case, the medical history is important, as doctors would say. As a rule, these irregularities in the operation of the computer declare themselves long before the “end of the world”. this is flickering and uneven operation of the screen, noise, etc.

It so happens that the machine starts to turn on, but attempts are interrupted at an early stage. It is likely that there is a problem with the BIOS initialization.

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In the most extreme case, a complete replacement of the laptop matrix may be required.

So why the laptop won’t turn on?

The most commonplace reason is a power failure

For example, the lack of contact of the power button or in the power supply, including in the area of ​​connectors or due to a broken cord, makes it impossible to turn on. What if the laptop does not turn on? First of all, check the reliability of the connection and the operability of the power supply.

Also, the problem can be caused by:

  • defects in BIOS firmware;
  • failure of the power supply on the motherboard
  • short circuit in the north or south bridges.

Almost all of these hardware failures can be eliminated in the shortest possible time by specialists from the Notebook Center service center. As our experience shows, attempts at self-repair usually do not bring the desired result and can finally finish off the car.

Sometimes the laptop will not turn on on battery power, and it is the battery that can be the source of problems.

  • the laptop does not run on an inserted battery;
  • the battery triggered a failure on the motherboard and the laptop does not work with or without a battery.

To diagnose and identify the problem in the second case, you will need special equipment.

BIOS problems

BIOS initialization problems can be caused by various reasons:

  • heating of the south bridge, which causes reboots
  • overheating of the processor, an important sign is shutdown after various periods of time.
  • power problem and dead battery.
  • And finally, the actual problem with the BIOS.

The fact is that the computer turns on because when power is supplied to the motherboard, a certain process of interaction between the hardware elements of the machine begins, the result of which is the loading of the operating system. After a full startup, the laptop goes under the control of the OS, however, in order for the operating system to start, it is necessary to trigger a set of instruction programs that are stored directly on the motherboard microcircuits.

Accordingly, problems with the BIOS lead to the fact that a laptop dell, toshiba, acer, any other brand, a personal computer or a tablet does not turn on, since they all use the same startup principle.

The laptop does not turn on. we establish the reason, we solve the problem

To begin with, you should clearly define the concepts. It is possible to say that the laptop does not turn on if, in response to pressing the power button, no hardware processes are started. That is, the car, as they say, does not show signs of life.

The indicator lights (except, perhaps, the battery indicator) are off, the cooler is not spinning, the standard system signals are not heard when turned on, the screen does not respond. In this case, we can say that the technical device does not work.

laptop, suddenly, turned, does, turn

Laptop does not turn on. problems with the operating system

When a laptop fails to start from a software glitch, this is one of the simplest problems that can arise. Often the reason is the work of viruses, sometimes. accumulated failures of the operating system.

You can try to “cure” the computer, tinker with the solution of this problem on the available OS.

The zero option in this case is to reinstall the system, which solves the accumulated problems in one fell swoop and radically.

If the laptop does not turn on and at the same time you hear sound signals (including uncharacteristic ones), unusual sounds and there is no image on the screen, then the problem lies in the hardware plane and the BIOS. Experts will help to establish the cause and correctly solve the problem.

If there are some signs of life, that is, the download is interrupted at some stage, then the reason for the failure most likely lies in the state of the operating system or the failure of the hard disk. In this case, there may be problems with the backlight of the screen caused by the failure of the backlight lamp or the inverter of the laptop matrix. In this case, you will need to replace elements, reinstall the operating system.

We have presented a far from complete list of possible reasons why the laptop does not turn on and does not start.

Meanwhile, making an accurate diagnosis is the key to successfully eliminating a hardware or software malfunction.

Why does my laptop not turn on after a sudden shutdown

If the laptop turns off and does not turn on, the wizard decides what to do and how to diagnose according to the generally accepted algorithm for eliminating the causes of the following malfunctions:

  • lack of voltage in the mains or violation of the integrity of the power cord
  • breakdown of the power supply
  • breakdown of the power connector
  • battery failure
  • short circuit of microcircuits of the north and south bridges of the motherboard, malfunction of the controller of its power supply
  • BIOS crashes

Specialists of the A-Aiseberg Service Center will carry out detailed diagnostics of the hardware and system parts of the laptop, repair or replace the power connector, power supply, battery and motherboard. All defective components are replaced by original certified spare parts.

How to troubleshoot

The disconnection of the device could be triggered by power surges or a discharge of the battery due to the lack of its power supply. Plug the laptop into a different outlet, or use a multimeter to measure the line voltage. If the value is below 190 V or above 250 V, then the problem is found. The power cable or wiring from the power supply to the power adapter may be damaged. In this case, the wizard will replace the power cord and worn out wiring.

If the indicator of the power adapter is off, and when a known good secondary power supply is connected, the laptop turns on, then the power supply needs to be repaired or replaced. Based on the cause of the breakdown, the master will replace the mains fuse, disk thermistor, power transistors or diodes of the diode bridge (they could be open or short circuit). In most cases, a breakdown is provoked by swelling or oxidation of capacitors, replacing which brings the power supply back to life.

If the power connector is faulty, then it is simply impossible to charge the battery or work from the mains. It is impractical to repair the connector, so the wizard will replace it by following these steps:

  • disassembling the laptop with removing the motherboard
  • unsoldering the board power connector using a hot air soldering station
  • removal of old solder with a braid
  • soldering the new connector into the pins of the motherboard using high quality gel flux
  • cleaning contacts from flux residues
  • assembling the laptop in reverse order

Advice! To prevent sparks from wearing out the power plug, plug the power cord into the power outlet only after connecting the plug to the power plug.

Note! Long-term operation of a device with a faulty power connector can cause burnout of a part of the motherboard and its power circuit.

Try removing the battery and connecting the laptop directly to an electrical outlet. If the device turns on, then the reason lies in the breakdown of the battery. The master will repair it, which consists in replacing batteries, temperature sensors and a temperature fuse that opens when overheated. If the laptop turns off when the battery is 60-65% charged, then you need to calibrate it.

A short circuit of the microcircuits of one of the bridges of the motherboard or a breakdown of its power controller can provoke an abrupt shutdown of the laptop. The device will not turn on until a specialist replaces the damaged electronic components of the chips of the north and south bridges.

The only non-hardware reason for the spontaneous shutdown of the laptop and its subsequent refusal to turn on is the presence of BIOS errors. The BIOS update procedure consists in installing a new firmware (compatible with the motherboard model) using a special utility. This will help eliminate critical errors and significantly improve the performance of your laptop.

Caution! An unprofessional BIOS update (incorrect installation or incorrectly selected firmware version) often provokes a breakdown of the motherboard.

Master call

It is very easy to leave a request for professional repair. fill out the online form or call:

“A-Iceberg”. 27 years with you. 5,500,000 completed repairs.

If the laptop turns off and does not turn on, then often all standard attempts to start it do not bring the desired result. At the same time, there is no reaction to pressing the power button, the screen does not light up, all the lights are off (in some cases the battery indicator is on), the cooler operation noise is not heard, and the BIOS sound signals do not sound, accompanied by which the operating system usually starts. The presence of the above symptoms is a convincing reason for contacting specialists.

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The engineers of the A-Iceberg Service Center promptly eliminate breakdowns of any level of complexity in one visit, regardless of the brand and model of the laptop. All work is done at home using modern equipment and high-quality consumables.

Why you can’t do without the help of a master

Only an experienced technician will be able to perform high-quality laptop repair and replacement of its spare parts without damaging the expensive electronics hardware. Self-elimination of malfunctions in most cases provokes a final loss of performance of the device or failure of its main components.

Professional repairs carried out in strict accordance with the manufacturer’s recommendations will guarantee long-term and trouble-free operation of your equipment. Trust the specialists of the A-Iceberg Service Center, and today your laptop will be fully functional. A warranty card is issued to confirm the quality of the repair. Leave applications online on the website or by phone 8 (495) 213-11-90.

How to Fix. Any Laptop That Wont Turn On / No Power / Freezes or Turns Off at Start Up

The computer does not respond to the start button

  • There is no power from the mains (the outlet or the device through which the computer is connected to a power source. a UPS or surge protector) is not working. The only reason not related to a malfunction of the PC.
  • The power supply does not provide the required voltages, as it is faulty, insufficiently efficient or not powered from the mains due to damage to the electrical cord.
  • Poor contact in the device connectors, damaged power cables inside the system unit.
  • Low battery voltage of BIOS chips.
  • Short circuit in one of the devices.
  • Malfunction of the elements of the switching circuit on the motherboard.
  • Malfunction of the power button on the system unit.
  • Static switch-on lock.

The computer does not turn on completely (no initialization)

  • Defective elements of the video subsystem (video card, monitor, video cable). The absence of an image on the monitor, even if everything except video is working, in the eyes of the user looks like the computer is not turned on.
  • The BIOS firmware has flown off (on some laptops, the BIOS rally is manifested by a complete lack of response to the power button).
  • A defective or unsupported processor is installed on the board.
  • Defective processor power supply system (VRM).
  • The RAM or its batteries are faulty.
  • On old motherboards. Northbridge or bridge power failure.

What do we mean when we say that the computer does not turn on

When someone says that their computer will not turn on, be aware that by this complaint the owner may mean the following:

  • PC really does not turn on: there is no reaction to pressing the power button at all.
  • The PC turns on, but not completely: sometimes it is limited to turning on the indicators on the system unit and the keyboard, sometimes. to the sounds of the system speaker, sometimes when the power button is pressed, the fans start working, and then nothing happens. One common detail. the screen remains black.
  • The PC turns on and immediately turns off or goes into an endless reboot until the picture appears on the screen.
  • The PC turns on and runs, but the operating system does not start on it.

The first 3 situations are of hardware origin, that is, they are associated with a malfunction or incorrect connection of equipment. The latter is most often caused by operating system errors that have arisen, for example, due to an unsuccessful upgrade from Windows 7 to Windows 10, as well as device driver failures. In the case of drivers, Windows startup is usually interrupted by a blue screen of death. BSOD.

In more rare cases, the inability to boot the OS is also associated with hardware problems. as a rule, RAM or hard disk.

Assembling the stand

Before removing components from the case, do not forget to disconnect power from both the system unit and the monitor. disconnect the surge protector or unplug the cords. If the computer is powered by a UPS, simply unplugging the UPS from the outlet is not enough, as the batteries still have charge.

Next, prepare your workplace. The table on which you will assemble the stand must be dry and clean. It is not necessary to use special anti-static mats, it is enough that there is nothing metallic on the table. To avoid damaging electronic components from static from your body, it is advisable to wear an antistatic wrist strap on your wrist. If not, it’s okay: just touch any unpainted part of the PC case with your hands.

Taking out every detail, inspect it for:

  • chipping elements;
  • the integrity of the contact groups (the presence of broken and bent contacts, melted or darkened plastic pads from overheating);
  • deformed and defective components (swollen capacitors, traces of electrolyte leaked from them, microcircuits with spots, and even more so with holes from burnout);
  • darkening on the PCB (yellow or brown spots often appear on the back of the board under very heating elements).
  • scratches (if the scratch is over the tracks, look under a magnifying glass at maximum magnification to make sure the tracks are intact).

Any of the listed defects may cause the PC to malfunction.

On machines that turn on for too long, after one time or after multiple reboots, pay special attention to the capacitors and the state of the PCB under them. So, electrolytes that have outlived their life may look normal, giving out a malfunction only with a small dark speck on the back of the board.

With any suspicion of the unsuitability of electrolytic capacitors, they should be replaced with new ones, and not only clearly defective ones, but all that are in the same circuit with them.

Having finished with the inspection of the devices, assemble the stand on the table with the minimum set. For a test run, a motherboard with a processor and a cooler, one memory module, a power supply, a keyboard and a video card is enough (if you use a discrete one, and the processor or the board has built-in video, connect the monitor to the latter).

During the assembly of the stand, it will not hurt to clean the contact ridges of the RAM and expansion boards with a school eraser. This will remove oxide deposits from them, which impairs contact in the connectors.

  • Turn on the power supply (if it is working properly, the standby voltage should start to be applied to the board). Check the temperature of the components again by hand. Hot, as you remember, shouldn’t be normal.
  • If in doubt about the performance of the power supply, replace it with a known good one (if available). If this is not the case, try running it separately from the system: disconnect the 24-pin connector from the motherboard and connect a load to one of the free connectors, for example, an optical drive or a regular light bulb with soldered wires. Close on the block that connects to the motherboard, the contacts opposite the green and one of the black wires. If the load shows signs of “life”, and the fan spins in the unit itself, you can consider it conditionally workable.

To avoid electrical injury, do not open the power supply, even if it is turned off. Capacities in the high-voltage part of its circuit can hold a charge for quite a long time.

  • Start up the stand (remembering to replace the working power supply unit). This time, not from the power button, but by closing the contacts to which its wires are connected on the board. If a picture appears on the screen (the computer is working), the cause of the problem is in devices that are not currently connected to the stand. If a known working monitor does not turn on, the failure occurs due to the fault of one of the devices involved.

Reasons for true non-inclusion

Since operating system boot failures are a separate big topic, we will not dwell on them in detail. Let’s consider the reasons for the first three situations and, in addition to them, one more: turning on the computer not the first time, but after repeatedly pressing the power button. So…

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Why the computer won’t turn on and how to determine what’s broken

The trouble described in the title of the article sooner or later happens to every computer: one fine (or not so) day it stops turning on. Sometimes this is preceded by some event, and sometimes absolutely nothing. In some cases, such failures are very easy to fix, and in others, with great difficulty. In a word, the range of problems leading to the PC not turning on is very extensive. Let’s talk about them in more detail: what is happening, how to find the cause and cope with the problem on our own, without resorting to the help of masters.

Constantly shuts down or reboots

Even before the operating system is loaded, the laptop may constantly reboot. This is a hardware problem. Most likely, there was a short circuit in the south bridge. it is overheated. This can happen due to USB breakdown. Another reason is overheating of the processor due to poor fit of the heatsink or excess dust in the cooler. But this rarely happens, and if it does, then a clear sign is high fan speeds. In this case, the laptop can reboot or turn off at different times. With poor or no power, the device turns on, but the screen quickly goes out due to a dead battery.

When working, the laptop turned off and does not turn on

In this case, after a while, the device can be turned on. With a 90% probability, this is processor overheating. The cooling system needs to be cleaned. After that, be sure to check the thermal system at maximum load. This test will determine how efficient the heat pipes of the radiators are. In the event of a malfunction of the parts, they must be replaced, otherwise the processor or the north bridge will burn out. Then the repair will cost much more.

Doesn’t boot from disk

This can be signaled by the inscriptions on the screen in English. For example, Error loading operating system or something similar. First, disconnect all external devices (flash drives, disks, etc.). Then reboot. If it does not help, then this is either a software or hardware problem with the hard drive. The first can be solved by contacting the service center, where they know exactly what to do if the laptop does not turn on. The second is by reinstalling the operating system.

The screen does not work, but the fan noise is heard

Take a closer look at the monitor, the backlight may just not work. Set on your laptop hotkeys to quickly enable it and press them. But to check exactly whether the problem is a screen or a laptop, you need an external monitor. Connect it with a cable to the VGA-out. If the picture appears, then the problem is in the laptop screen. It is possible that the matrix burned out. In this case, you will have to take the device to a service center, where they know exactly what to do if the laptop does not turn on.

Sometimes the fault is caused by a discrete graphics card. This is especially true for laptops, which are often played. Due to dirt, poor cooling and improper use, the video card overheats and burns out. To prevent this from happening, do not play with the laptop on your stomach, on your knees, or in any position that blocks the ventilation holes. And be sure to use a cooling pad.

What if my laptop won’t turn on? The laptop stopped turning on: reasons and actions

For some people, a laptop is so necessary that when it doesn’t turn on, they feel hopeless. If you turn on your laptop, and it does not show signs of life, then do not rush to panic. In this article, we will tell you what you can do if this kind of trouble occurs.

All laptop problems are divided into two groups: software and hardware. The first ones can be solved immediately without getting up from the chair. This includes problems with programs, operating system, and BIOS setup. If the latter appear, then repair is needed.

So what if the laptop won’t turn on? Below we describe the most common problems and tell you about how to diagnose them.

Does not turn on (no signs of life)

In most cases, these are power problems. Check the tightness of the connection of the contacts and the presence of voltage in the socket. Usually, there are indicator lights on the laptop and its adapter, which are on if there is no breakdown. Most often, the problem is in the power supply, which is not functioning properly (no contact in the connector, bent or broken wires). Find out exactly when the power goes out.

To avoid future difficulties with the power connector, first insert the plug into the laptop and then the power cord into the outlet. On the contrary, you should not do it, since when the plug is connected, a spark will appear, spoiling the contacts.

If everything is in order with the power supply and connectors, and the laptop still does not turn on, then check the battery. Remove the battery and turn on the device without it. If this does not help, take the laptop to the service center.

Freezes showing splash screen

Above, situations were described when the laptop stopped turning on. What if it freezes? At the same time, an initial splash screen or some text may appear. Then nothing happens, the laptop writes about an error or beeps. This is most likely a problem with the BIOS settings. You need to enter it and reset the settings. In different versions, this item may appear in different places, but it has the same name and contains the defaults keyword. Then save the settings (save) and exit (exit). Please note that the system may report an error, but further downloads are possible. You just need to press the F1 button. This usually happens when the battery on the motherboard runs out. At the same time, BIOS settings and time get lost. It needs to be replaced (either independently or at a service center).

This also includes the situation when the laptop does not turn on after the update or freezes. Reinstalling the system will help here. It is better to turn off the automatic updates feature and choose only those that you really need.

What should I do if my laptop won’t turn on (or rather, won’t boot) after following the above tips? Then the problems may be due to RAM or hard disk. And this is much more serious. For some laptop models, access to RAM is not closed. It is worth removing the strips and carefully cleaning the contacts. The problem with the hard drive can be diagnosed by its clicks during the transfer of information.

So what if your laptop won’t turn on? The reasons may vary. To begin with, it is worth considering at what point it happened. That is, what last actions could lead to a breakdown. If it has been a long game, it is likely that the graphics card or other chipsets of the laptop have overheated. A qualified repair is needed here. If a program was installed, and after rebooting the laptop did not turn on, then these are operating system errors.

The most common problems and how to diagnose them were described in the article. And finally: do not make rash conclusions and do not disassemble the laptop without the appropriate knowledge.