On then off.

[spicer5]

I have a three year old computer, built myself, and never had a problem. In the Three days ago I couldn't get the computer to start up. I push the power button and not even a second later it would be off. after about four tries, it started up normally. Yesterday no problem. Today it took 8-10 times before the power stayed on.

Any help would be great.

 

[amorenn]

Look into your power supply, could be going. I suffered similar problems when mine began to go. If you can find a PSU tester to check voltages etc that would be optimal.

 

[AMD Radeon]

this one is really long troubleshooting but it can save you from getting headache
http://www.tomshardware.com/forum/261145-31-perform-steps-posting-boot-video-problems

 

[spicer5]

Best answer selected by spicer5.

 

[spicer5]

Thanks All. It was the PSU. I replaced it and the computer works great.