HP ProBook 6475b Won't Boot to PC DOS

mattsh33

Estimable
May 13, 2014
1
0
4,510
Hello everyone,

I'm trying to boot a HP ProBook 6475b to a ghostcast boot disc, which runs a version of PC DOS. The disk works fine on other models of computers with the same Realtek GBE NIC but on this specific laptop (and I have multiples of them) it brings up the CD to boot but then the machine just reboots.

I was thinking maybe it had something to do with Secure Boot or some sort setting in the BIOS to launch a legacy system. Any suggestions?