My motherboard is the Foxconn NFORCE 590 SLI and my old processor was an AMD Athlon 64 x2 5200+ running at 2.2GHz. I decided to replace the CPU with a faster quad core. The new processor is the AMD Phenom 2 x4 940 Black Edition Deneb running at 3.0GHz. Normally, when I turn my computer on, all fans spin up and are very loud for about 10 seconds and then drop down when they realize the system is cool. When I first turned on the PC after installing the new CPU, the fans kept running loud and the system wouldn't POST. I assumed I had accidentally installed the cooling fan backwards on the CPUs Heatsink so opened the case to find that wasn't the problem. The fan, was in fact, directing air into the heatsink. There is no video and there's never the "beep" from POST. I removed my RAM chips and turned it on to see if it would beep an error because of the missing RAM but it didn't. It's like it won't even start to POST. Last resort? I reset the BIOS; still nothing.