When asked for the password, did you try to just press "enter"? I know that with XP Home the same will happen and, if no administrator password has been set up, you don't need one.
I tried rebooting in safe mode on VISTA Home Prem. Inspiron. I wanted to do a system repair. the message pop up required password, but don't remember setting one up when first purchased the computer. I pulled up properties and the only thing that showed was computer name and full computer name. last name was indicated in both places. If there wasn't a password set up how would I get one for future use in working from safe mode? Thank you so much. Computers can make a person go crazy, but there is something about not wanting to give up. For the sake of learning.