playing Source games PAGE_FAULT_IN_NONPAGED_AREA atikmdag.sys

The dumpfile is

Code:

 ******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************

Use !analyze -v to get detailed debugging information.

BugCheck 50, {ffffc00024961000, 2, fffff800464d5792, 0}

*** WARNING: Unable to verify timestamp for atikmdag.sys
*** ERROR: Module load completed but symbols could not be loaded for atikmdag.sys

Could not read faulting driver name
Probably caused by : atikmdag.sys ( atikmdag+115792 )

Cause

Bug check 0x50 usually occurs after the installation of faulty hardware or in the event of failure of installed hardware (usually related to defective RAM, be it main memory, L2 RAM cache, or video RAM).

Test your GPUcard or if you have other GPU use this and see if the system keeps BSODing. If not than your current GPU is (probably) faulty.

Videotest Furmark
To test your GPU you can use Furmark see this tutorial FurMark - GPU Stress Test - Windows 10 Forums
FurMark download site: FurMark: VGA Stress Test, Graphics Card and GPU Stability Test, Burn-in Test, OpenGL Benchmark and GPU Temperature | oZone3D.Net
FurMark Setup:
- If you have more than one GPU, select Multi-GPU during setup
- In the Run mode box, select "Stability Test" and "Log GPU Temperature"
Click "Go" to start the test (Looks like it's "BURN-IN test" now)
- Run the test until the GPU temperature maxes out - or until you start having problems (whichever comes first).
NOTE: Set the alarm to go off at 90ºC. Then watch the system from that point on. If the system doesn't display a temperature, watch it constantly and turn it off at the first sign of video problems. DO NOT leave it it unmonitored, it can DAMAGE your video card!!!
If the temperature gets above 100ºC, quit the test - the video card is overheating.
- Click "Quit" to exit

What you are looking for:
- excessive heat from the GPU (report back with anything over 90ºC)
- problems with the video display (picture is distorted or jumbled, picture turns black, etc)
- problems reported by the program (I haven't seen this, but "just in case")

OK, so I did Furmark. My GPU temp never went over 70 C, which seems fine. However, the video itself stuttered significantly. The first time I tested it, after 2:11 or so, it froze and stopped responding. The second time, after ~2:30, it spontaneously restarted my computer.

I don't really understand why it would have to restart (like I said, temps were OK), so this is pretty troubling. Is my GPU shot?

I have similar issues with dual display so far nothing has worked for me . Hope someone has info