GSOD and Chrome left open issue after updating to Insider Preview build 29661.1000

The repeated SYSTEM_THREAD_EXCEPTION_NOT_HANDLED stop code with dxgmms2.sys suggests a graphics-stack failure, but dxgmms2.sys is not proof that Windows itself is defective. Because the issue began after an Insider update and involves an AMD graphics driver while hardware-accelerated applications remain open, isolate the driver and build interaction first. Record the exact stop-code screen, Windows build, AMD driver version, and the crash times. Install the latest AMD driver supplied for your processor or motherboard, then test with Chrome hardware acceleration temporarily disabled to see whether the reproduction changes. Do not treat that workaround as a permanent fix. If the crashes continue, submit the crash details through Feedback Hub and include whether the same driver is stable on the previous Insider build. If the PC cannot stay usable, use Windows Recovery to uninstall the recent update or return to the earlier build.