Can't upgrade db: Admin Password Required- but won't accept my password

[laurelsstitchery]

I know I haven't removed any files from catalog or admin side, but I'm still getting a white screen instead of the database being upgraded.

edited to add: The white screen in during the database upgrade. I get to the screen where you enter your login information at the bottom. I put in my username and password and hit the button to continue and it goes to a white screen.