Originally posted by made_of_asp
The problem is not a power supply. I also had the computer taken to a professional but he couldn't figure it out :P

BTW it sometimes turns off if i shake it or kick the lower desk stand.

How do you know its not the Power Supply? What is your PS rated 300watt?

In the past problems like this have always been related to the power supply, either being just poorly built or too weak.

I'm with Muddy on this one, I mean can a bluesman be wrong.