To reset the BIOS, what I do is unplug the machine and hit the power button. With it still
unplugged, remove the battery from the mobo, and look for a CMOS Reset button. I've never
touched a 7900, but I have a 7800 and there is a yellow button. Press and hold the button
down and count to 5 slowly (1 Mississippi 2... works good) and once you reboot I've found
that it resets the ME just fine.
Even though you reset the ME firmware, it doesn't remove the record from SCCM. I'm not
exactly sure how to go about that, but I am sure it's because of the record still in the database.
PEBKAC. Move along, nothing to see here.
It kept re-provisioning against one of my other site servers, because before my holiday vacation, I had manually assigned it to another site code for testing.
I'd still be interested in knowing if it's possible to reset the MEBx through software though. It would be very handy.
Thanks for the response Johnny.