I use NTPASSWD (free and on the net.)
If that's too hard, try http://www.lostpassword.com .
This will reset the admin password.
I have only one Administrator account and my son, who is 13 and thinks that he is a computer expert, did something to the password and now I can't use the account, reset it or nothing.
When I tried to log in I got the message " The User Profile Service failed the logon. User profile cannot be loaded."
I have Verizon Fios and I need to upgrade my antivirus service but I can't do it because I need to log in as an administrator.
Do I have to reinstall the software from scratch or is there a way to fix this?. Please help. I'm using Vista Home Premium version on an HP a6037c desktop.