About a week ago I went out and when I came back my computer had powered down. When I turned it back on the keyboard blinked and the fans came on but the HDD"s didn't whir and I don't get a BIOS ...

Alright, I changed my CPU fan the other morning. I wanted to reapply and start fresh with thermal compound so I removed the CPU also to get it completly cleaned off. I then reinstalled and ...