4.9R Bootup Failure - BTX halted

[Danny]

int=00000006 err=00000000 elf=000110246  eip=811e7525...
.............etc..
ss: estp=25 00 00 00 00 ff ff ff-eb 1f 9d 46 01 50 53 68
BTX halted

This happens right on bootup. This is a fresh install of 4.9 Release.

Any ideas? Thank you!