Ok, try making it crash again, and, just like the last time wait ~7 minutes post reboot.
Then check for MCEs:
and, if anything is returned, proceed to checking mcelog:
If you get nothing, let me know.
Then check for MCEs:
Code:
dmesg | grep Hardware.Error
Code:
sudo tail -50 /var/log/mcelog
If you get nothing, let me know.