I have seen this issue a handful of times at various sites and I thought I would share with you ways you might resolve this issue.
Issue/Symptoms: Cisco B Series blade boots to a WatchDog 8190 Major error halting on every boot. Hitting ESC will allow the current boot process but each reboot will halt on the error.
Disabling POST ERROR PAUSE option in BIOS policy would allow the system to complete boot sequence without user intervention
if you have a Cisco partner or customer account, you should be able to login and see the Bugfix for this issue located here.