My windows 7 ultimate recently has started pushing me back to the logon screen on startup. Even tho this is my private machine and it has no administrator password. Somehow every now and then it reverts to having me to either click the user picture before getting to the desktop or when I set the password (since I thought this might help) it also asks the password. When I go to control userpasswords2, the "Users must enter a user name and password to use this computer" is unchecked... and yet it still behaves as if it was selected (randomly, like it gets that idea, and sticks with it until I turn it off again). I also tried to add the default password line to the regedit and it still didn't help.
It's really annoying to me because I need this machine to be able to auto logon and not require me to click or enter password every time. Please help. I really need a way to force auto logon on my machine and make it stay that way.
PS. I have tested for malware and viruses, the machine is clean.