One of my comouters just shut it's self off, and now when I push the power button nothing happens. I tried replacing the power supply, that did not work. I don't know what the problem is, any help would be apreciated.
Is this a dell celeron based machine? They do this a lot. What you have to do is pull it all apart.. right down to a bare motherboard and psu. power on and see if anything happens. It may be as simple as the power switch not making momentary contact , or as big as a completely dead motherboard. Certain faults in any hardware can and will stop it even attempting to boot, but there is usually some signs of life. You need to take the "I'm building from scratch approach" remove the ram, boot and see if it starts beeping like mad. http://www.preventiveguru.com/