AMD FX-6100 ASRock 970 Extreme 4 8GB RAM GTX 550Ti I was messing around in the BIOS to overclock my CPU a bit, and I somehow set it to 4900 MHz. then I tried to start to PC, but I got BSOD. then when I tried to restart, I just got stuck on a black screen, with mouse and keyboard not working. now, when I try to restart, its stuck on the flashing windows emblem. HELP! what can I do! ive already put the CPU back to stock speeds.