I was testing a new CPU cooler tonight, and when I got my system back together I'm not getting any video! I use a Sapphire HD4870 card, and there are three red LEDs on the back that stay lit and I get no signal at all to my monitor. Some searching has led to this being a power problem, but I have tried reseating the card, tried the card in different slots, tried reseating all my power connections, different PCIe cables (modular PSU), and even a different PSU and a different video card (identical card), all with no change at all. I am baffled and more than a little pissed.
The only thing I've done is change the CPU cooler twice. Now the one I tested has a very strong retention clip, and I felt the board flex a little when I removed it, could I have done something there? This board doesn't have onboard video so my system is completely dead until I get this resolved. Thank God for the wife's laptop. (Yes, I am an addict, I admit it freely.)
Anyone have any ideas?