I wanted to upgrade my current PCs Graphics, so went and bought a new card. Made sure it was the right connection etc. After opening the case for the first time ever, I pushed in the card. But then had this urge to clean the CPU, undone the fan, unhooked the CPU and cleaned it carefully. After putting everything back in place, went to power up the PC and no it won't work.
The CPU fan starts spinning, the keyboard lights flash, there's certainly some power there but there's no lights on the front of the case or nothing going to the moniter. At first I though it would be something to do with the card so tried taking that back out and rebooting, but no luck.
Any help / ideas would be appreciated.