Well, basically I installed a bad driver i guess and my computer wont boot up past the memory check screen, and leads to a black screen. Ive tried repair, all advanced options. Everytime I try to repair I get a BSOD (IRQL_IS_NOT_LESS_OR_EQUAL , something to that extent, with stop error 0x000000000a or soemthing.) I recently put the HD into my older computer (with another HD and XP on it, and backed up the files.I attempted to delete the nvidia driver files manually as none of the programs showed up in add/remove programs. I plugged the HD backinto the dell and no avail, and i took out video card and used integrated, and also took out a cd-rw dirve, which wasnt the problem. Basically I've tried everything a person would normally first offer to try, so Im really lost here. Is there a way to "reformat" that drive from another computer, or reinstall XP onto it? Or even better, use system restore from just one harddrive? Thanks a lot, however looks like I need a new HD.