Unreal Engine is exiting due to D3D device being lost.

Development Getting Started & Setup
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LowLevelFatalError [File:Unknown fLine: 200) Unreal Engine is exiting due to D3D device being lost. (Error: 0x0 - "S OK)
Hi, i keep having problems opening UE apps, i already installed the latest driver and selected the Nvidia form the control panel for the app. Here are my laptop specs:
Intel core i7-13700H, 16 GB RAM, NVIDIA GEFORCE RTX 4060

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Hello there @Im_not_kidding!

That error is usually tied to either GPU software, or a hardware conflict. Let’s take a few options for resolution:

  • Please make sure your OS is updated to the latest version, and refresh your nVIDIA drivers. Pick the “Clean Installation” option, as well as going for the “Developer” drivers, as these have more stable settings for engine work

  • Test switching between DX11 and DX12

  • Go to Windows Graphic Settngs, and set UE to High Performance

  • If you recently updated UE, try deleting all files from directory C:\Users\UserName\AppData\Local\UnrealEngine (make a backup just in case)

  • Access regedit, navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers, and add a TdrDelay at value 60

  • Ensure your GPU is properly mounted, and no connection is lost with your motherboard