I had a power cut recently while on my PC and since then I haven't been able to log into Windows XP (SP2) in either safe mode nor any of the other F8 options. My computer is a Dell Dimension 5100, came pre-loaded with XP so I don't have the original disc however I do have a Dell recovery CD which I think pretty much works the same way. I also have a tuneup 2006 backup version on the hard disk which I can log into as far as it brings up the splash screen, loads for a moment or to but then gives me the same BSOD. I tried repairing it with the console on the recovery disk but as soon as I hit enter when it asks me to choose which windows installation I want to repair, it comes up again. I've tried everything in my knowledge arsenal to no avail. The error is: REGISTRY_ERROR blah blah try safe mode blah blah STOP 0x00000051 (0x00000003, 0x00000001, 0x0003000 0xE257d030) Any suggestions would be appreciated.