There are lots of possible reasons for your PC refusing to first up, ranging from the simple and like shooting fish in a barrel to fix, to the much more complicated. However, whatever the reason, it's very likely that your files are safety. Unless something catastrophic has happened, there's no reason to worry virtually your data. If the worst comes to the worst and you tin't go your PC to work ever again, you can notwithstanding remove the hard drive or SSD and access it from another machine.

With that out of the way, permit'south look at the first steps if your computer won't boot.

1. Check for power supply issues

If in that location's no power getting to your PC, it won't start. The obvious signs of a loss of pop power are that when you start it, nothing lights upward, and the fans don't start.

  • If information technology's a laptop, a loss of power could upshot from a battery that has completely run out of accuse. And then, the first thing to practise is plug it in and leave it to charge for a few hours. If that doesn't work, it could hateful the charger is faulty, and then effort a different charger if you tin can. If the charger has a power indicator, check whether information technology lights upwardly when you plug it in.
  • If your PC is a desktop computer and doesn't start, cheque if it'southward non the plug socket at error past plugging it into a different socket. If that doesn't work, information technology could exist that the power supply in your PC has failed. If that's the case, you'll need to replace it. Before you do that, make sure that information technology is the power supply. If yous tin, remove the case and bank check that the power button is continued correctly — a faulty button is much easier to set up than a power supply.

You should also try replacing your PC'southward CMOS (or clock) bombardment. This tiny battery supplies power to the motherboard and then that it can shop BIOS settings. It's essentially a watch battery and costs but effectually $ten to replace. If your PC is more than than three years former, it's a likely crusade of your PC declining to boot.

You should also check your PC'southward power cable by swapping for another one and trying again. In one case yous've ruled out the power cable, CMOS bombardment, and switch, and if yous're comfortable using a multimeter, you should test the ability supply. If it'south faulty, accept it replaced.

ii. Brand certain it'due south not a slow boot

Brand certain your PC is non just really deadening. Information technology may sound ridiculous, but it could be that your PC is just starting up very, very slowly. And then exist patient and requite it fifteen-20 minutes to make sure that at that place really is a trouble. If it'due south installing updates or having trouble with autorun applications, information technology may seem like information technology's not starting upwardly.

Tip

If autorun applications are causing your PC to commencement slowly, y'all can disable them. To do that, use CleanMyPC. It makes it very easy to stop apps from autorunning and slowing down startup.

three. Make sure your monitor or display is functional

If you tin can come across that your PC has power because the fans first 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 exist a faulty display. Check the power connection to the monitor and that it's properly connected to your PC. Try disconnecting information technology and reconnecting it. If that doesn't piece of work, try connecting a unlike monitor, if possible. That way, you lot'll be able to either determine if information technology's the monitor's error or dominion it out.
  • If you have a laptop, or if you've ruled out the external display, information technology could be that your PC is in sleep way and is having trouble waking. To check that, shut it down completely and restart from cold. To practise that, hold down the power button for 5 seconds and so press information technology again to start your PC.

4. Eliminate external hardware

If none of the above solves your problem, and you take external hardware attached, one of those peripherals could be the culprit. With your PC completely shut down, disconnect everything – except keyboard, mouse, and display, if y'all're using a desktop. Endeavor starting information technology again. If it starts upwards successfully, shut information technology downwards and reconnect i peripheral, and so restart. If it's ok, echo with another peripheral. Proceed going until it fails to beginning, then you know yous've institute the problem.

5. Reset memory modules and internal components

This step isn't for the faint-hearted, especially if you lot have a laptop. Only if you know what yous're doing, you lot tin open the case and remove then replace memory modules, your graphics bill of fare, CPU and even disconnect and reconnect the power supply to ensure that a bad connection isn't the cause of the problems. If you don't feel competent enough to practise it yourself, yous should ask a friend or colleague or have your computer to a repair shop and ask them to do it.

A few more reasons your PC won't turn on

If the upshot is not related to hardware, you should probably check other reasons your PC won't turn on or freezes upon startup. Here are a few things you should endeavor:

  • Uninstall new software that may cause organization conflicts;
  • Clean corrupted caches;
  • Perform thorough PC cleanup to delete hidden junk files which prevent your PC from booting.

Fortunately, all these tasks can be performed easily with CleanMyPC — a tool for smart PC cleanup. It will help y'all deal with any kind of organisation junk, including cache and registry errors, and get rid of unnecessary programs. A regular reckoner cleanup will not only ready current issues but will prevent your PC from malfunctioning.

CleanMyPC is available for free download here.

As you tin can see, at that place are lots of reasons why your PC might non start up. None of them means it's broken for good, and sometimes the prepare is very elementary. So requite the tips in a higher place a try and see if they work for you.