I was playing around with a Linux Live CD (Ubuntu; USB) and tried changing the password of one of my non-admin accounts through the terminal following these instructions.
After restarting, the icon of the account disappeared, so I could only logon to my the admin account. I ended up making a little change to the registry to replace the icon logon screen with a user and pass textfield and also changing the corrupted account's password through my admin.
Thankfully it solved the problem and I can now access my account, but can someone please give me insight into why this happened, specifically why it corrupted my account? Does it have something to do with Windows 7 security detecting someone messing with an account via live cd and preventing access to it?
Any insight into this is appreciated - thank you!