I have a Dell E510 which is a little over a year old. It started a few weeks back when at night when I was sleeping the fan was going crazy and was at full speed, I was tired so I just pulled the plug out. The next day the cimputer turned on only after a lot of reboots and unplugging the power cord. Then the next day it wouldn't turn on at all and it had a steady yellow/amber light on the power button. The next few days I spent unplugging everything and booting and following dell help guides and it kind of works. When I press the power button, it turns yellow/amber for a sec then goes green. From there sometimes the computer shuts off or it can go and boot up Windows. After entering windows I have a few minutes before the computer shuts off without any warning and then tries to reboot but fails. Within the first 10 min of turning on the computer it shutsdown. I desperetly need help.

The first/easiest/cheapest attempt would be to get a PSU tester and test your Power Supply Unit. Most any electronics store will carry some type. Here is a Google on them:

http://www.google.com/search?sourcei...8&q=psu+tester

Also if there is a Reset button on your PSU you might want to try that.