I posted this in the other forum, but I have a quick question because it might be an operating sound problem. I have XP Home on an ASUS P4P800, P4 2.4c, older computer, and I want to take that drive and have it dual boot with vista on my new system. I wanted to do some work on this drive so I built up my new comp (Abit I35 Pro, 8800gtx, E6850), and put this exact harddrive (Old 80 gig WD IDE) and loaded up. It was recognized in the BIOS and I put it as the boot, but when I started loading windows (after it said that windows didnt start sucessfully) and gave the screen for starting in safe mode, nethworking, etc or last known config, or regularly, it gave me a blue screen of death midway through the "bars" loading. I couldnt read the error, but it started back up immediately. Will my old XP system Hard drive work with my new system? Do i Have to do anything different with the updated hardware? Thanks.