Hi all. My mate gave me his laptop after throwing it to the floor during a temper fit. My daughter has a similar model. I swapped the hdd to see if it was ok. It was. I put my daughters hdd back in and now it doesn't show any user icons at the start up window?? This means I can't get in to do anything. I've tried safe mode, repair, restore blah blah. Nothing. It boots up it shuts down but no way of logging on. I tried start up repair and I get Problem Signature 01 6.1.7600.16385 02 6.1.7600.16385 03 Unknown 04 -1 05 Auto failure 06 1 07 Corrupt Registry OS Version 6.1.7600.2.0.0.856.1 Locale id 1033 It's as though the hdd I plugged in left some info in the cache and then wrote it to the original hdd, is that possible?? Any clues on a fix??