Seeking help with completely debilitating crashes

[AdamKirk]

Hello, I've been working with unreal pretty seamlessly and with no significant problems until this morning. As of today, every project whether it is a new project or an existing one crashes at 0% on the project loading/initializing screen. This happens relatively quickly, 5-10 seconds after launching. Possibly coincidentally, I updated the Epic Games Launcher this morning before the first crash.

The things I've done to try and resolve this are as follows:

Deinstall and reinstall the Epic Games Launcher
Install an earlier version of the Epic Games Launcher
Open or create projects in 4.22, 4.21, 4.23
Completely deinstall Unreal 4.21, 4.22 and 4.23 and reinstall 4.23
Check for Windows updates and any other system updates.
And searched the contents of my crash reports on the forums and other places to no avail! (not that I understand the crash reports)

Here is the crash report:

Fatal error!

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION writing address 0x00008390

0x00007ffc1e49bc20 UE4Editor-D3D11RHI.dll!UnknownFunction []
0x00007ffc1e49a0ed UE4Editor-D3D11RHI.dll!UnknownFunction []
0x00007ffc0f52f7f9 UE4Editor-RHI.dll!UnknownFunction []
0x00007ff7541b2e39 UE4Editor.exe!UnknownFunction []
0x00007ff7541aa667 UE4Editor.exe!UnknownFunction []
0x00007ff7541aa9fa UE4Editor.exe!UnknownFunction []
0x00007ff7541bb92c UE4Editor.exe!UnknownFunction []
0x00007ff7541be60e UE4Editor.exe!UnknownFunction []
0x00007ffc530c7bd4 KERNEL32.DLL!UnknownFunction []
0x00007ffc5344ced1 ntdll.dll!UnknownFunction []

If anyone can help with this please do! Myself and one other are depending on this computer to run Unreal over the next few days and I am completely stumped. It seems like it must be a relatively simple problem to identify given the short crash report and the regularity and predictability of the crash. Thanks for your time.

[Moth Doctor]

It could be GPU hang, something that started happening after updating graphics driver.

In order to get better information (now you have only list of UnknownFunctions), download "Editor symbols for debugging" through 4.23 installation options in launcher. This allows to get precise information where exactly application crashed - line in source file.

[AdamKirk]

Thank you for your response! I downloaded Editor symbols for debugging and the result is:


Unhandled exception

UE4Editor_D3D11RHI!FD3D11DynamicRHI::InitD3DDevice() [d:\build\++ue4\sync\engine\source\runtime\windows\d3d11rhi\private\windows\windowsd3d11device.cpp:1581]
UE4Editor_D3D11RHI!FD3D11DynamicRHI::Init() [d:\build\++ue4\sync\engine\source\runtime\windows\d3d11rhi\private\windows\windowsd3d11device.cpp:962]
UE4Editor_RHI!RHIInit() [d:\build\++ue4\sync\engine\source\runtime\rhi\private\dynamicrhi.cpp:214]
UE4Editor!FEngineLoop::PreInit() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2222]
UE4Editor!GuardedMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launch.cpp:131]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:147]
UE4Editor!WinMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:279]
UE4Editor!__scrt_common_main_seh() [d:\agent\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll

[AdamKirk]

Problem Solved! It was the GPU driver, thanks for the lead and glad to have the debugging stuff installed as I was able to find a lot more info searching with that.