A reader named Eric found himself locked out of his Vista administrator accounts:

“Somehow, my account and my son’s accounts were downgraded to standard user on his new computer using Vista Home 32-bit. I cannot seem to log in to make any changes to the accounts now. It prompts me to enter a password but no password box is available to type it in. How can I log in to change my account back to administrator?”

In a post last year, I described how to enable Vista’s hidden administrator account and password-protect XP’s default administrator account. Of course, this tip works only if you use it before you actually need it because it requires administrator privileges.

I found another approach described by Microsoft MVP Ronnie Vernon on the Soft32 forum. Here it is in a nutshell:

• Restart your PC and press F8 repeatedly before Windows loads to open Vista’s Advanced Boot Options screen.
• Use the arrow keys to select Safe Mode and press Enter.
• On the low-res Windows Welcome screen, choose the Administrator account, which by default has no password.
• click Start > Control Panel > User Accounts and either change your standard account to an administrator one or create a new administrator account.

When you restart the machine normally, you’ll have access to the administrator account you just restored or created.