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Stop 0X0000007F UNEXPECTED_KERNEL_MODE_TRAP

This is the BSOD image for 0X0000007F 

Cause: 
 This error message can occur if either of the following conditions exists:
  • Your computer has hardware or software problems (hardware failure is the most common cause).
  • You try to over clock the speed of your computer's processor (for example, you set a 150 MhZ processor to run at 187 MhZ).
The above STOP error means a trap occurred in kernel mode and the trap is either one the kernel is not allowed to have or is always fatal. The most common causes of a STOP 0x7F are:
  • Low-level hardware corruption, such as corrupt memory (RAM)
  • Mismatched memory modules
  • A malfunctioning motherboard

Resolution:

To resolve this issue, use the appropriate method:
  • If either software or hardware can cause a particular trap, a debug is required to determine which is the cause. If you suspect a hardware problem, try the following hardware troubleshooting steps:
    1. Test the RAM in the computer by running the diagnostic software that is provided by the computer manufacturer. Replace any RAM that is reported as bad. Also, make sure that all the RAM in the computer is the same speed.
    2. Try removing or swapping out controllers, cards, or other peripherals.
    3. Try a different motherboard on the computer.
  • If you are over clocking the speed of your processor, set it back to the speed at which it is designed to run.
  • Check with the hardware vendor for any updated hardware drivers or BIOS updates, or both.

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