My desk top recently crapped out on me. Now when I press the power button, it goes on for a split second and then goes off, on again, off...I know this because the fans and LED spin and light up for a second and then go off. Once the pwer button is pressed, this on/off thing will go on indefintely if I don't use the switch on the back of the computer to shut it off. Some digging around tells me it could be a bad power unit or a motherboard. Utterly clueless if it's the MB.

I'm not good when it comes to computer hardware, but if I know what needs to be replaced, I can easily get the parts and fix it myself. I've never really had to fix a computer before. Right now I'm using either my laptop or my ancient desktop that's sloooooow.