Home or Pro?

 

If Home, boot into "safe mode" and go to control panel/user accounts and create a New user account, then restart the PC and log into the new account you just created, then you can copy the old user profile over to the new user account and start using that account from now on.

 

scroll down to "Copying your user profile

http://www.lockergnome.com/it/2004/12/15/get-it-done-recover-a-damaged-windows-xp-user-profile/

 

After you use the new user account for a few days and are happy with it, go to control panel/user accounts and delete the corrupted account.

It is Pro but thank you for the quick response.

When you start up the PC, Do you get the Welcome screen to log on?

 

If you do, reboot and when you get to the welcome screen, do a  Ctrl + Alt + Del twice in rapid succession, do you get a different logon window?  If so type in Administrator for the user and leave the password blank, hit enter key, does this allow you to load windows?

I don't know what I have done but I am able to get into the accounts without it showing the errror message. Everything is extremely slow. My backgrounds has changed and many of my icons are missing. I was going to try system restore now but it don't have a restore point in this month and it isn't letting me go back to past months to restore it at one of those points.

That user account is corrupt, create a new administrator account now, that way you can still logon when the other account finally dies.