Don’t expect many responses as we see “Student” by your name and you have given us absolutely zero reasons why you might be trying to do this as a legitimate venture.
I’d suggest that you Google it and/or give us a reason that you have for doing this.
This is a professionals website not a hacker site.
A program called passware works well, you need to create a floppy, use your xp cd with the floppy (step by step instructions provided) will reset the admin password to 1234.