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Application has been blocked from accessing graphics hardware

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Joined
1 May 2009
Posts
33
I got a new system from OCUK around a month ago and have been having intermittent crashing issues when I'm in games. I'm in a game when suddenly the screen artefacts and crashes with windows giving the message:

"Display driver nvlddmkm stopped responding and has successfully recovered" or more recently

"Application has been blocked from accessing graphics hardware".

If I reboot the computer it all starts working again until the next time. It's happened in all my games at one time or another, most often in Civ6 but also WoW, Total War: Warhammer and Doom.

I've got the latest NVidia drivers but it's done it on previous versions too. Is this a software/windows issue or is my GFX card not working correctly? Thanks.

Specs:

i7-8700 / Inno3D GeForce GTX 1080Ti iChill X4 / Asrock Z370 Extreme 4 / Team Group Vulcan T-Force 16GB (2x8GB) DDR4 PC4-24000C16 3000MHz /
 
I had a similar isssue with an AMD card that kept doing this. There was several possibilities as to the cause of issue, I'll give them here for you to cycle through..

1. The GPU actually had a fault, but was never detected. It caused no end of issues after driver updates and to Windows 10. (It was the 7950 that died on me nearly 2 months ago).
2. The CPU was not overclocked well. It was previously running at 125Mhz bclk, changed this back to 100Mhz, and also upped some voltage to it. The crashes went away.
3. In relation to 1, rollback to older drivers made it more stable in some cases.
4. Went into Registry and altered TDRDelay (I think that's the name) and gave it a longer delay so the message doesn't happen as frequently.

Have a whizz through those and see if it helps.
 
Thanks for the help. I've tried 3 and 4 and 2 doesn't apply as I haven't overclocked the CPU. Hoping it's not the first but not sure how to find out really :(
 
There was another thing to check, but it involved going through the system logs to find out what application was being blocked from accessing the GPU hardware, and you needed to provide it access. And that part after needed a bit work involved cross checking app ids. I didn't need to reach this step for my debug, but it may help in yours if you need something to check before seeing if it's physically the GPU.
 
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