I have a old dell with a 80gb hdd running xp. I have a newer dell with a much larger hdd running win7. I decided to scrap the xp unit and go with the newer unit, not for storage but speed (more memory, faster processer, etc) but I wanted the xp format and all my pics, etc. I had the bright idea of simply swapping drives between the units and apparently killed the win7 unit. It never did recognize the xp drive and now doesn't recognize the original win7 drive. I did manage to get the old xp unit running again with it's xp drive, but would like to get the win7 unit going again so I can try again, this time by transfering data the proper way instead of swapping drives. I've reset the bios, ran the F5 diag (all passed), check F2 and the drive is listed, it just seems way to complicated just to get the original drive working again. Any help would be greatly appreciated.