I forget my admin user name, but i remember the password, now i cannot access the internet with the parental control, how can i restore the admin right and previleges?
If you can boot the Mac you can see long names in System Preferences/Accounts and short names in the Users folder at the root of the disk.
Open System Preferences then Usedrs & Groups, and in the left panel will be a list of all users on the Mac and the type of account they have, Standard or Admin. Find the Admin account name and choose that for login.
I had fixed it as followed your suggestion. Bingo.
Thanks a lot!
You are very welcome, glad to hear you were successful.
Retrieving data ...