On a generic PII 400 (Tech Media, American Megatrends). The processor may be fried too I connected the cable on the mobo that goes to the floppy drive backwards ( the red stripe the wrong way) and now it wont boot at all. I've never installed a motherboard, can I just buy another one and pop it in there? Could I buy like a PIII and put that in? How do I know what motherboard is compatible? sorry for the newbie type question, I've only replaced/installed HD's/CDRW/Memory/Fans and power supplies, nevre built a system from scratch or replaced a mother board.