I am debugging a rather nasty system issue which locks up the system(no
response from the keyboard, mouse), and happens on some systems but not
others. This is a Windows 10 system with several of our drivers both
PCIe and USB. I've tried several experiments to isolate the issue
without much success. One of the methods we landed on, to narrow down
the issue is a NMI jumper available on the motherboard which can force a
We can create a crash dump by asserting the NMI when the system is
running, however I can't seem to create a crash dump when the system
I did try to force one of my drivers to lock up by creating a pseudo
condition, and I was able to create a crash dump using the NMI in that
My question are:
1. What would cause a lockup where the NMI does not respond?
2. Would a driver be able to cause a lockup that would block the NMI
from responding to the OS?
Any insights would be appreciated,