I believe I have Error Message 1773 which comes up on the login screen that prevents from logging on. It looks like this:
The User Profile Service service failed the logon.
User profile cannot be loaded.
Please help me! Thank you!
See if the following can get you into an admin account ......
Go to Safe Mode .............
Restart your computer > immediately and repeatedly tapping the F8 key until you see a black and white window. Use the Up/Down arrow key and select Safe Mode with Networking.
Now, while in safe mode, can you do one of the followings ?
1. Can you logon to your own admin account without the error message ?
If yes, do so. Then do a system restore. Pick a date when you were free to logon to your admin account as your restore point.
http://www.howtogeek.com/howto/windows-vista/using-windows-vista-system-restore/
If system restore does not slove the issue, then use this tutorial
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2. If you cannot logon to your admin account in safe mode, do you see another Administrator Account next to yours ?
( By defaut, the Built-in admin is disabled.)
If you do see it on your logon screen, you are lucky. That one is the Built-in Admin Account.
By default, it has not password.
Logon to it and do system restore .
3.If system restore does not help, then do the same tutorial as above :
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If you cannot do either of the above, I am afraid you will have to re-install your win 7.