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Hey! My friend has brought his pc round for me to fix it. It randomly shuts itself down at any time. However it stays on when its in safe mode. I have removed all the virus’ and spyware. Any ideas? Cheers

specs would help.

maybe the power supply is too weak

i used to have this a long time ago
the rubbers that should pull the power button back when you press it were broken, so the button would press itself quite often

Does it go through the windows shut down process or just immediately go off?

Well, I think you should check if it’s overheating even though it stays on in safemode. When the fan on my graphics card broke down and my computer started to overheat, it worked in safe mode aswell.
Download speccy or speedfan and check how hot all your components are.
Speccy http://www.piriform.com/speccy Speedfan http://www.almico.com/speedfan.php

Quoted from achy

Its defo not over heating as it wouldn’t stay on in safe mode. Will get spec soon as! Keep the ideas coming!

nice logic! in safe mode graphic drivers/3d acceleration n stuff is disabled –> less heating. so yeah, use the advice in the previous post and check the temps, even if the pc runs smooth now, just do it to be on the safe side.

I have just changed the power supply to a brand new one. After 5 mins its off again.

take all components out, clean them properly, replace them.