I have a N5010 15 inspiron that needs a bios update, currently on a07. Just reinstalled windows 7 after a complete tear down and reassembled. Was trying to find out why batteries aren't recognized or charging. Put back together and after the reinstall the battery is still not recognized ( have 2 known good batteries.) I'm also getting a fail on the install of the USB controller so unknown device keeps popping up and tried everything to fix drivers. I'm 95% sure this is a bios issue. Can't update with no battery recognized and when I try to run bios /forceit in command prompt I get unknown command. Can anybody please give me any advice. I'm usually pretty good at trouble shooting, but this one keeps shutting me down with everything I try.