1. Check the power supply
- If it’s a laptop, a loss of power could result from a battery that has completely run out of charge. So, the first you should try is to plug it in and leave it to charge for a few hours. If that doesn’t work, it could mean the charger is faulty. So, if you can try a different charger that fits your laptop, use that. If the charger has a power indicator, check whether it lights up when you plug it in.
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If your PC is a desktop computer and it doesn’t start, check that the electrical socket is not at fault by plugging the computer into a different one. If that doesn’t work, it could be that the power supply in your PC has failed.
2. Make sure the monitor or display is functional
If you can see that your PC has power, because the fans start-up or the power lights come on, but nothing else happens, there are a couple of possible faults.
- If you have a desktop PC connected to an external monitor, it could be the display that’s faulty. Check the power connection to the monitor and that it’s properly connected to your PC. Try disconnecting it and reconnecting it. If that doesn’t work, try connecting a different monitor, if possible. That way you’ll be able to either determine it’s the monitor’s fault or rule it out.
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If you have a laptop, or if you’ve ruled out the external display, it could be that your PC is in sleep mode and is having trouble waking. To check that, shut it down completely and restart from cold. To do that, hold down the power button for 5 seconds and then press it again to start your PC.
3. Eliminate external hardware
If none of the steps above work, the peripherals could be the culprit. This could either happen because of electrical issues or external hardware failures. Unplug all USB devces including keyboard and mouse if on a desktop PC. If on a laptop, unplug any USB dongles or other devices.
After doing this, try restarting the system again. If it still does not work, move onto the final step.
4. Reinstall system
If none of the above steps work, the last possible thing you would want to do is, reinstall windows. At this point, you can be sure that it’s a software issue and not a hardware one. This is not something that should be attempted by yourself especially if you have never done anything like it before. If you suspect windows is the problem, move on to the next steps page.