[RESOLVED] How do I get around Managed Boot Agent?

I came back from vacation to find one of our library Internet PC's would not boot, because instead of the normal post and startup (it's a Micron, calling support later this morning) I am greeted by a Managed Boot Agent screen that cannot connect, and when I try to reconfigure it (ctrl-alt-b) it asks for a password, which I don't have, because I didn't put it on the computer! I can't try to work on it remotely either, because it doesn't boot past the MBA. Help!

Figured it out myself. The BIOS lost the settings for the hard drive and was trying to boot through the network card. Finally managed to get into BIOS using a partial password and redetect the settings.