Over the weekend, I was running XP on my Macbook installing a scanner driver (bootcamp). When XP reset, it never rebooted again. The computer wouldn't get past the blank grey screen. I couldn't boot from the system install disc (holding C) either. I've done all the boot up tricks. Oddly, the target disc drive function works and I was able to get to the HD from another Macbook. When I remove the HD the macbook will boot from the CD. I put in another Macbook HD and it boots up just fine. The problem HD won't boot up in another macbook either. I have 2 Macbooks. The one I bought in June and an old one I bought last June. I put the new macbook 80gb in the old Macbook (which had 60gb), wiped the drive and reinstalled everything (put a new 160gb 7200rpm in the new macbook). I'm not trying to save any data on the OLD macbook, just want to use the 80gb , if possible. I'd right off the 80gb drive as dead if I couldn't reach it as a target drive. (I was able to successfully run Disc util to check it) Am I missing something here?