Marshall Alperin followed my advise in Create a Fast Boot Option and create a Fast Book user logon. Then he decided not to keep it. He deleted it in Control Panel, but it's still the default option when he boots.
Sorry that my tip did you no good. Without knowing what's slowing down your PC, I can't guarantee that removing user-specific autoloaders will fix it.
I'm even sorrier that my advice appears to have messed up your system. Let's see what we can do about that.
Remember that I told you to do more than just create another user logon. I had you tell Windows to always launch that logon by default--without even stopping to ask for a password. So now Windows is left with mixed signals--trying to boot to a "user" who no longer exists.
To fix the problem, select Start, type control userpasswords2, and press ENTER. Check Users must enter a user name and password to use this computer, then click OK.
Or, if you'd rather logon automatically (not to Fast Boot, of course), after checking Users must enter a user name and password to use this computer, select your preferred logon and uncheck that option again. Click OK, and if you're prompted for your password, enter it. If you don't have a password, leave the field blank.