Hello, my younger sister had been messing around with the computer and for some reason started bringing up the user name and password box. As far as we know there is only one username with no password. When hit return the computer would log on as normal. However now it wont. It just starts to log on and then 3 seconds later logs off and brings us back to the username and password screen. Ive tried all options on both menu F5 and F8 and it wont let me get past the username and password box. Even tried administrator and it just logs off again and comes back to the same box.
Any suggestions? Really appreciate any help you can offer. many thanks in advance.