I have two hard drives, one with Mircosoft XP and the other with misc. storage. When installing a fan controller, I had to turn the computer off and on roughly 20 times in the 20 minutes I spent intstalling it. I turned on the computer to start it up, and both of the drives were not being detected by the BIOS. I went into the CMOS to verify that the computer itself was not detecting the drives, then switched ribbon cables. This didn't work for either. I then switched the hard drive (with the OS) with a blank hard drive, and it found both drives. I switched back the old hard drive in, and the computer found neither. Anyone know what I can do?