So, I was dumb. My game was running fine, with some lag issues on the NVIDIA GPU. I saw in the options that my Intel had shown up on the drop down menu and wanted to see what it was like running on it. The game immediately crashed and will not let me open it again. I keep getting a prompt saying my GPU is not supported followed by a prism device removal detected error 1 message. So, my question is, how do I fix this? Is there a way to change the settings without opening it or would a reinstall work, because my fear is that I’d uninstall to do a reinstall and that the setting would just remain the same. What do I do?
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Exit the game and launcher.
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Go to “Documents”
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Under here, look for “Diablo IV”
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In here, rename the file called “LocalPrefs.txt” (or just “LocalPrefs”, if you aren’t showing file extensions) Just add a “.old” to the end.
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Then, restart the launcher, then restart the game. This should reset the game to defaults.
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You will then go through initial setup. (configuring brightness, etc)
You will not lose any progress or characters.
If for some reason that fails to fix the issue, then you need to do the following:
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Open the Nvidia control panel.
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Click on “Manage 3D settings”.
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Click the “Restore” button with the Nvidia logo on it.
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Then save settings and exit the Nvidia control panel.
Then try to play again.
Depending on how you originally had your system setup, you may need to reset some values back to what you might have customized them to.
For example, I would recommend capping the FPS no higher than your monitor refresh rate. Turning off Nvidia Reflex, DLSS, and Peripheral Lighting (Chroma Effects).
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Thank you so much for the reply! I’m still currently having an issue. It’s still giving me two error messages I mentioned before. The first of them, it says “the GPU you are using is not supported. You may experience graphical bugs, instability, or poor performance while using it. Updating your drivers may resolve this.” I obviously can’t update the driver because of the type it is which is mentioned below. The second messages says “[Prism] Device removal detected. Error 1.” The current GPU that it’s set it seems to be the issue. It’s an Intel(R) HD Grapics 530 which obviously won’t work for this game. I’m trying to find a way to change the preferred GPU back to my NVIDIA without being to open the game because it crashes when I do. Once again, thank you for the reply, I’ll keep trying your methods to see if I was being dumb again and messed up, but if you have anymore suggestions I’d love them.
Is this a laptop or all in one PC?
I think that setting is in the Control Panel under the video settings.
System->Display->Graphics->Default Graphics Settings.
Look there. I don’t have my laptop in front of me, but going to grab it and check.
This is a laptop! Alienware 17 R3. If I delete the entire folder and do a fresh reinstall will I lose anything?
OK
I think I found it.
So go to System → Display → Graphics.
Under here.
Look in the APPS for Diablo IV. (or all Diablo games)
Click on it, and you should have an “Options” button.
Go there, and set it to "Let Windows decide, and it should say (High performance).
If it doesn’t, then manually choose the Nvidia in the list. Do that for each game if need be.
My system lists Diablo III like 3 times, but no Diablo IV. May have to add it for all I know too.
Only the nearly 80GB installation. I don’t think that will change your problem though.
Yeah, the issue is persisting and I have no idea what to do.
Well, for giggles I checked out my laptop installation and noted the following:
Diablo IV took nearly 10 minutes to download the relatively small update. During the update the download speed would slow to a crawl, then the launcher would blip offline, log me back in, and the speed kicked back up. Did this 3 times before it was done.
It then downloaded the Hearthstone 8GB patch in only a few minutes, fast speed, no issues, same with the smaller Overwatch update. No issues.
But with D4 (which happened to be between the other two in fact) took much longer and caused weirdness with the launcher.
Next, I simply restarted the laptop.
Then opened the launcher and ran D4. Loaded right up.
I can see the option you changed, where you picked the Intel instead of Nvidia. I did not do this yet
Now if you have changed it here, then removing the LocalPrefs file from Documents\Diablo IV should fix this issue.
But you said you tried to rename it (which also should have worked) but it didn’t. Try deleting it. Makes sure that you double check for it to be gone from your OneDrive too, if you use that as well.
That should have forced it to defaults, which will also reset the designated GPU back to a default pick.
However.
The only other things it could be, I had described above as well.
Outside of Windows somehow affecting management of the GPU assignment regardless of APP settings. (Settings, System, Display, Graphics - List of Apps) - Look for Diablo IV. If its NOT here, add it. Browse to your installation folder, find the Diablo IV.exe. It wouldn’t hurt to also add the Diablo IV Launcher.exe as well. The make sure both are set to use the Nvidia GPU. You can also try to use Windows Recommended (High Performance), but setting it directly should work too.
At the moment, my laptop is working normally though, post update, before and after adding the Diablo exe files to the app list and setting them to Windows Recommended.
Good luck.
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Sorry I’m responding late but I eventually found a solution after a friend jokingly told me to take out the Intel GPU. So, I’ll explain what was wrong from my end. When I changed it to the Intel in the game’s menu, no matter what I did outside of opening the game itself, it just didn’t register all the changes because the game couldn’t open to register and sync with the changes. It was defaulting to the choice I made to make the Intel the primary GPU. So, what I ended up doing is going to device manager and disabling the Intel then opening the game. Then, the NVIDIA was the only option and after saving the change everything was fixed and I could reenable the Intel.
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Well, here was a simpler method to a direct fix, however I still think doing what you did was a better fix.
-GPU Not Supported w/Prism Device Removal. Error #1 after last game update
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So I literally did the same exact thing trying to see if the onboard graphics might just work better… figured it wouldn’t but I did not expect the game to just crash and not start up at all! Either way, the only thing that worked was disabling the card I couldn’t use. So thank you for this!
i had the same problem, and this worked, youre a god among men, thank you so much
Deleting “localprefs” works and i checked the documents folder after booting the game and another localprefs took its place.
thanks
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