Possible Duplicate:
How can reset Windows administrator password?
I just bought an large computer from Goodwill.
When Windows XP boots, there are three users
- a name with no password or privileges
- Guest
- Network Operator/Administrator, which is password protected
I cannot delete or anything on the machine because it keeps coming up "Access Denied". I have tried everything, including going to the registry but the machine is totally protected. How I get administrator rights?