Oct 09 2011, 02:17 PM
I actually had something simular happen one time. I had a power supply go bad on me. It had power going to most of the components but one of the lines was dead. I would start with that. If you don't have a spare PSU that you can put in there and test, there are some computer stores that will test yours for you.
Hopefully that is it. It will be the easiest/cheapest to fix.
Hopefully that is it. It will be the easiest/cheapest to fix.