error code 7F, UNEXPECTED_KERNEL_MODE_TRAP.
Usual causes: Memory corruption, Hardware (memory in particular), Installing a faulty or mismatched hardware (especially memory) or a failure after installing it,
3rd party firewall, Device
drivers, SCSI/network/BIOS updates needed, Improperly seated cards, Incompatible storage devices, Overclocking,
Virus scanner, Backup tool, Bad motherboard, Missing Service Pack