The subject says it all. Was given a five year old Dell, 1.5 ghz. Added a user account for myself, with administrator rights. Deleted one old account, no problem. Deleted the second old account, and the system locked up. On reboot, got message to press F1 to retry boot, or F2 for setup. Went into setup, and saw that the system doesn't see either the C drive, or either of the CD drives. Used a set of 6 XP Floppy Boot disks, which worked fine, but because the system could not see the hard drive, could not load Recovery Console, or do anything else. Would appreciate any help from anyone on this matter.