[BUG] BSOD on cowork activation - AMD RX 6500 XT + Hyper-V (Windows 11)

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Activating the "cowork" feature in Claude Code causes an immediate BSOD on Windows 11 with an AMD RX 6500 XT GPU.

Stop codes:

• 0x000001B8 (VIDEO_MINIPORT_FAILED_LIVEDUMP)
• 0x000001A8 (VIDEO_DXGKRNL_LIVEDUMP)

The crash is reproducible every time cowork is activated. Hyper-V (required by cowork) conflicts with the AMD GPU
driver, causing a GPU watchdog timeout crash. Tested with AMD drivers 32.0.21043.10005 and 24.12.1 — both crash.

Workaround: press F8, boot into Safe Mode with Networking, system recovers. Currently not using cowork as temporary
fix.

What Should Happen?

Activating cowork should not cause a BSOD. The feature should either work correctly with AMD GPUs + Hyper-V, or
display a compatibility warning before activation instead of crashing the system.

Error Messages/Logs

BSOD Stop Codes:
  - 0x000001B8 (VIDEO_MINIPORT_FAILED_LIVEDUMP)
  - 0x000001A8 (VIDEO_DXGKRNL_LIVEDUMP)

No additional logs captured — system crashes immediately upon cowork activation before any logs can be retrieved.

Steps to Reproduce

1. Install Claude Code on Windows 11 Pro with AMD Radeon RX 6500 XT GPU
2. Ensure Hyper-V is enabled (required by cowork)
3. Open Claude Code
4. Activate the cowork feature
5. System immediately crashes with BSOD (VIDEO_MINIPORT_FAILED_LIVEDUMP / VIDEO_DXGKRNL_LIVEDUMP)

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.150

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

OS: Windows 11 Pro 10.0.26200
GPU: AMD Radeon RX 6500 XT
AMD Driver versions tested: 32.0.21043.10005 and 24.12.1 (both crash)
Node.js: v25.8.2

HAGS (Hardware Accelerated GPU Scheduling) was disabled prior to testing — did not resolve the issue.
Crash occurs every time cowork is activated, 100% reproducible.
Recovery method: F8 → Safe Mode with Networking → system restarts normally.