Windows 7 user accounts missing at logon screen?

[deepwater 0]

I wanted to change the music file in imageres.dll. Well, I dont know if it specifically that but when I restarted my computer I couldnt log in to my account because.........there were no accounts to log in. I could see only the light blue windows 7 background.

Help please!!!!!!!! I also took control of all system files if that helps

[Alan2273 9]

Try safe mode, tap F8 at start up and use system restore.

[deepwater 0]

I tried that in the past and today!!! It still doesnt work.

[Alan2273 9]

Do you have a back up at all, if not try this, but be careful as this software is very powerful and can wreck your OS if you are not careful.

http://pogostick.net/~pnh/ntpasswd/