Rank: Wiz
Rating: 79%, 14 votes
Is it the OS password or the Bios password?If it is an OS you need a disc like Ophcrack live CD.It is a freeware for vista,W7 or XP.You can recover your password using this Disc.You can download it using this link
http://ophcrack.sourceforge.net/ and burnt it on your dvd or cd.
If you find it helpful please vote my answer.