I have a computer that I built, it has two hard drives in it, one with Windows 7 and one with Vista. I plugged my girlfriend's hard drive into my computer to back up her data and reformat it since her's was having some issues(XP Home). However, once the reformat finished I get the error "A disk read error occurred Press ctrl....etc to restart." I took her hard drive out and tried booting into one of my hard drives, but the same error shows up. I've pulled the CMOS battery, checked different bios settings, reset them to default and checked my SATA cables. Any idea what I managed to screw up? I've done plenty of work on PCs before but I'm drawing a blank here.