[guga10]

Hi. My pc worked great for almost 1 year but then it started doing strange things. One day I turned it on and there was no output on display. I clicked the restart button on the case but instead of restarting it shut down and immediately started again. No display again. Then it worked normally for couple of days. Then it began to shut down and start up automaticly
when I wanted to turn it on. I can't even if it starts Windows because no display output again and my PC keeps rebooting itself. Display goes sleep, when I try to start up but it works on the other other PC-s. I have i5 Nvidia 440 gt, RAM 4gb. Help please. Thanks.

[Triple6]

Your power supply may be failing. Can you swap in a known good power supply from another computer to test?

[guga10]

Gonna find it. I've never touched the inside parts of my PC . Is it easy? Do I have to watch some tutorials before? thanks

[Triple6]

It's fairly easy. Here's a guide: http://www.hardwaresecrets.com/article/362 and there's lots of Youtube videos as well.

[guga10]

I'l let you know when I'm done. Thanks anyways.