I believe Windows Update has caused this issue...after a typical update and restart the O/S won't boot. See below screenshot...I don't believe it's cause of the BMC, I just think that's the last thing to be checked before the O/S boots.
I tried putting the disc in and doing a repair, no auto-fixes seemed to work. I tried chkdsk c: /scan and that ran but didn't find anything. Any next steps I should be thinking? Not sure if this is a Dell BIOS issue or windows issue at this point?