i delete my administrator account accidenttally. i want it back but i only have one user,which my current account now.i dont have any user account.so,how to get back deleted administrator in my PC? please help me!
You cannot delete the built-in Administrator account, you can only enable/disable it. You CAN, however delete the profile for that account, which will be regenerated upon the next login.
I don't know if it's called deleted or disabled...but on Windows 7, it can be deleted it by editing the registry.
To get it back, the registry must be returned to default (e.g. registry key backup).
It would not be regenerated upon the next login unless the registry key is restored.
We do it at work all the time, to both built-in Administrator and guess accounts.