I have a dell e6440 laptop running windows 7 Ultimate. Today I did System Restore and all of sudden the built-in Admin account is disabled. If I start windows normally it gave me an error 'the trust relationship between this computer to primary domain has been failed". I tried to login to Safe Mode and it has error: administrator account had been disabled" I tried boot from Win 7 CD, select Repair, Command Prompt, type in Net User administrator /active:no and it did not help. I went AD and reset computer account and it did not help either. Basically I am just stuck!.