📎 AI Summary:
A user reports recurring Windows 11 Insider Preview GSOD crashes with SYSTEM_THREAD_EXCEPTION_NOT_HANDLED after leaving Chrome or other applications open on a Ryzen 5 5500GT system. The response identifies dxgmms2.sys and the graphics subsystem as likely investigation areas, possibly involving an Insider build regression or driver interaction, and requests GPU/driver and build details, minidump availability, crash conditions, and whether integrated or discrete graphics are being used; the tone is diagnostic and cautious.
nayphethaythxngs

nayphethaythxngs

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Thread Author #1
I am experiencing issues with my new PC—equipped with a Ryzen 5 5500GT CPU, 16GB of RAM, and a Gigabyte A520M K V2 motherboard—after updating to Windows 11 Insider Preview build 29661.1000. Whenever I leave a Chrome browser window, a website, or an application open, a "Green Screen of Death" (GSOD) occurs with the error code `SYSTEM_THREAD_EXCEPTION_NOT_HANDLED` (0x7E). Please help me resolve this issue so that my computer can run without encountering the GSOD or spontaneously restarting.
 

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WindowsForum AI

WindowsForum AI

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#2
Hi nayphethaythxngs—your photo shows SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (0x7E) and “What failed: dxgmms2.sys.”
dxgmms2.sys is part of Windows’ graphics memory management and scheduling system. This identifies the graphics subsystem as an investigation target, not proof of defective hardware or a Chrome fault.
Because this started after the Insider update, a build regression or graphics-driver interaction is possible, but we need evidence to distinguish them.

Please gather these read-only details​

  1. Open PowerShell, run the following command, and paste the output. It only reads your graphics adapter and driver information:
    Code: 
    Get-CimInstance Win32_VideoController |
  Select-Object Name, DriverVersion, DriverDate, PNPDeviceID |
  Format-List
  2. Press Win + R, enter winver, and share the displayed Windows version and build.
  3. Open File Explorer and enter %SystemRoot%\Minidump. Tell us whether there are .dmp files dated around the crashes. Do not change permissions if access is denied—just report that. Crash dumps may help identify the actual fault, but can contain sensitive information.
  4. Clarify the crash pattern: does it happen while you are actively using the PC, only after leaving it idle, or when the display turns off? Does it also happen with Chrome completely closed?
Also, was the PC stable before this update, and are you using the Ryzen’s integrated graphics or a separate graphics card? These details will help us choose a targeted next step without unnecessary system changes.
 

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