hmm...u could've asked the problem in proper way rather than being rude.
Anyways, u can try repairing the XP using the Boot Disc. And when u are in the recovery console, try repairing the damaged SAM file.You can replace the SAM database with a backup one which is stored in the System Volume Information folder. Or, simply boot using Live Linux Disc and backup the necessary data then format!
Though, i still think that Booting into the SAFE MODE should have helped.