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PC can not start. Hi, I've got a PC which last times can't swich on. After pressing power button hundreds of times, finally boot up and working fine, but after I switch off can not start up again (not only dont boot up, but not even power up at all). The power button sounds fine, PSU? or try something else? Cheers

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  • mctros Feb 07, 2010

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Try a different power supply and make sure only the connectors to the motherboard are connected. Do it this way so we rule out whether a piece of hardware is causing the problem. Try turning it on a couple of times, if you can get it to turn on consistently with no problems and to turn off with no problems then that means the original power supply is bad.

If you do this and the system intermittently still won't turn on properly or turn off, then you know the original power supply is good.

If it turns out that the original power supply is still good then look at the motherboard, see if there are any capacitors that have a puffy silver top to them. A good capacitor will have a flat silver top on them. If you find any capacitors that have a puffy silver top on them, then that means they need to be replaced with ones of the same UF rating and at least the same voltage or higher.

If you don't find any puffy capacitors then try unseating and reseating the memory one stick at a time in each slot one at a time. If that doesn't do it then unseat and reseat the CPU.

You'll know the motherboard is the issue if you still can't get the machine to turn on properly after doing these steps.

Posted on Feb 06, 2010

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