The computer does not turn on: reasons and reliable solutions

There are many reasons why a computer won’t turn on – from something simple and easy to solve, to really difficult problems, the elimination of which takes almost a few hours. However, whatever the reason, remember this: your personal files are probably fine. If the worst happens and your PC can no longer start in principle, then you can always remove the HDD / SSD and access important files on another machine. Of course, if something happened to the disc itself … well, let’s not run into the front.

Anyway, let’s take a look today at why the computer may not turn on and what can be done about it.

The computer does not turn on: reasons and solutions

1. Checking the power supply

The computer does not turn on

If your PC is not powered properly, it will not turn on. Logical, right? The most obvious signs of a power problem are no blinking LEDs and no noise from the PC cooling system.

  • If it’s a laptop… Lack of normal power supply may be caused by a discharged battery. Put your laptop on charge and let it sit for at least three to four hours. If prolonged charging does not help, then the problem may be a damaged charger, so try using a different charger (if possible). If there is a diode on the charger, check if it lights up when you connect the charger to your laptop. Also, do not exclude a failed battery.
  • If it’s a PC… Try plugging it into a different outlet in your home. Be sure to check if the power switch next to the power connector of the PSU is set to the “On” position. (in the presence of). If nothing has changed, then the problem, unfortunately, may lie in an incorrectly working power supply. In this case, you will have to replace the power supply unit with a new one or take the old one to the nearest service center for repair. In addition, in some cases, the computer may not turn on due to the breakdown of the power button in the case, and therefore it also needs to be checked.

We also recommend trying changing the BIOS (CMOS) battery on your motherboard. As a rule, such a battery should not cause problems with starting the PC. Do not forget that it is thanks to such a battery that the BIOS settings you set are supported. A CMOS battery should be pretty cheap – you can find it in almost any computer supply store.

Among other things, you should definitely check if the power cable is properly connected to the PSU itself. Who knows, maybe not so long ago you connected something to one of the rear connectors and accidentally hit the power cable. Anything happens …

2. Can the PC just boot slowly?

Do you think that the computer does not turn on, but maybe the matter is completely different? Maybe your PC just started to boot slowly? It may sound silly, but under certain circumstances, the computer can turn on and enter the OS very, very slowly. Press the power button and step away for about 15-20 minutes to give your PC a chance to “warm up”. Installing many major updates and problems with the startup of some applications can all cause problems with the speed of your computer.

3. Checking the performance of the monitor

If you see that your PC is receiving power (sounds of coolers or flashing diodes), but there is nothing on the screen, then the problem may lie in the connected monitor. There are a couple of things you need to check here:

  • monitor power supply;
  • connecting the monitor to the video card.

The computer does not turn on

Disconnect the monitor completely from your computer and then reconnect. If possible, use a spare video cable (HDMI, DVI-I / D, VGA, DisplayPort). This cable may have been damaged. The same goes for the power cable, but here everything is a little more complicated, because not all monitors have removable power cables.

By the way, laptop owners are also not immune from display problems. The laptop seems to work, but the image does not appear on the screen? Your car may be stuck in standby mode. Press and hold the power button on the laptop for five seconds to turn it off completely. Wait a minute, friend and turn on your laptop.

4. Disconnecting peripheral hardware

If none of the above helped you and the computer still does not turn on, then it’s time to turn your attention to peripheral devices. Turn off your PC completely, and then disconnect everything from it except the keyboard, mouse and monitor. Now start your PC and see if it can turn on correctly.

Did it work as it should? Then the culprit in the situation that arose was obviously one of the peripheral devices. We turn off the PC, connect one device, turn on the PC – and so on until you find the problem device. These devices are often external hard drives or USB sticks.

5. Reconnection of all components in the system

Perhaps the connection of some components in your system unit or laptop case has been disrupted. You need to open your car and reconnect all of its components. With a desktop PC, such a task will not be particularly difficult, but you can sympathize with laptop owners, especially those who have never, so to speak, looked under the hood of their cars in their lives.

Ask a friend or colleague who understands computers for help reconnecting. The process is quite fast, it should take no more than 10-15 minutes.

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