Hi, I just bought this used computer a few days ago. I got it home it worked great then I had an idea to get into the control panel and users I set myself up with administrator user and password. Then I went to get back into computer the next day and the first screen that comes up on it is the Administrator and password. This is the only screen that comes up I tried a start up disk but nothing works can't get the start up screen or anything just the Admin and password. Please help!! Oh it's an older style DELL INSPIRON 1200...Thanks! Mary