I have a client with a new HP desktop with Window 8.1. I set it up for her to boot to the desktop with a local log-in using her name and no password. After using it for a few days, it started booting to the Start screen using the account name "HP" and we have no idea what the password is. Everything is totally locked up with this account name. We can't even see her account. I used a couple different Password recovery software disks and none of them can touch this HP account and don't find her name anywhere. I ran recovery and set everything back to "as delivered." I set up her account again with no password and booting to the desktop. She called me back last night to tell me it did the same thing again.
Does anyone have any idea what is going on here? An HP admin account taking over the computer on its own? Or is there some flaw in Windows 8.1 that doesn't like have a no password start up account? I haven't seen anything like this anywhere and haven't found anything searching on the internet.