The 0x0000007f, UNEXPECTED_KERNEL_MODE_TRAP, error code means a trap occurred in kernel mode and the trap is either one the kernel is not allowed to have or is always fatal. That trap is defined with the first parameter 0x00000000 as being a DIV instruction is executed and the divisor is 0.
The most likely causes of this error are overclocking something on the board (CPU, RAM, video or a bus) or low-level hardware corruption, such as corrupted/bad RAM or RAM slot - RAM includes video RAM.
Try reseating your RAM and video card. If that doesn't help try your RAM in another slot. If that doesn't help try different RAM. If that doesn't help try a different video card or try the video card in a different machine. If you are overclocking something, bring the system back to normal pace. If you have put RAM in the system that is in anyway different (faster, larger, timings, etc..) than what the motherboard manufacturer says is compatible with the system or the slot change the RAM following their requirements.