What issues could cause both stop codes of 7F and 116?

I'm working with a computer that had 3 recent BSODS. The first crash 3 days ago gave a 7F error with ntoskrnl.exe, which is hardly helpful. The crashes 2 and 1 day ago were with a 116 error, indicating video issues - bluescreenviewer listed dxgkrnl.sys. Could driver issues cause both error codes to intermittently happen? I cannot reproduce any of the BSODs.

EDIT:

7/2: 070215-32339-01.dmp 7/2/2015 1:11:48 PM UNEXPECTED_KERNEL_MODE_TRAP 0x0000007f 0000000000000008 0000000080050033 00000000000006f8 fffff808030c9888 ntoskrnl.exe ntoskrnl.exe+748c0 NT Kernel & System Microsoft® Windows® Operating System Microsoft Corporation 6.1.7601.18869 (win7sp1_gdr.150525-0603) x64 C:\Windows\Minidump\070215-32339-01.dmp 2 15 7601

7/3: 070315-23587-01.dmp 7/3/2015 11:49:48 PM 0x00000116 fffffa80037fe4e0 fffff88003e0c80c 0000000000000000 0000000000000002 dxgkrnl.sys dxgkrnl.sys+5d134 x64 C:\Windows\Minidump\070315-23587-01.dmp 2 15 7601

7/4: 070415-20794-01.dmp 7/4/2015 9:12:09 AM 0x00000116 fffffa8003c14180 fffff8800408780c 0000000000000000 0000000000000002 dxgkrnl.sys dxgkrnl.sys+5d134 x64 C:\Windows\Minidump\070415-20794-01.dmp 2 15 7601

Did some research

STOP 0x0000007F (UNEXPECTED_KERNEL_MODE_TRAP)

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

Your specific case is 0x00000008 means: Double Fault

Double fault

A double fault occurs when an exception occurs while trying to call the handler for a prior exception. Normally, the two exceptions can be handled serially, however there are several exceptions that cannot be handled serially and in this situation the processor signals a double fault. The two primary causes for this are hardware and kernel stack overflows. Hardware problems are usually related to CPU, RAM, or bus. Kernel stack overflows are almost always caused by faulty kernel-mode drivers.

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.

0x00000116

This error occurs when there is a compatibility issue between the graphic card, the hardware or its driver.

What You should do is go to device manager, uninstall the display driver and do a restart.

https://www.youtube.com/watch?v=vPt78weVKac