i changed my username on windows 7, and then dint restart at tht moment. when i restarted my comp again, the username is the old one and its not accepting the old password... i tried to restore it to a previous date but apparently there is no such option on my comp.. plz tell me wat to do?? i have ubuntu installed on my comp too and thats working.. tell me if that can help in any way?
Microsoft does have an official Windows 7 Support Forum located here http://tinyurl.com/9fhdl5 . It is supported by product specialists as well as engineers and support teams. You may want to check the threads available there for additional assitance and support.