[BUG] Cowork "Virtualization is not available" — Windows 11 Home 25H2, Gigabyte AX370-Gaming, AMD Ryzen 7 3700X, SVM hidden in BIOS

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?

What's Wrong?

Cowork tab shows "Virtualization is not available — Claude's workspace requires
Virtual Machine Platform, but the virtualization service isn't responding.
Restart your computer to resolve this." Restarting does not resolve it.

Environment

• Claude Desktop: latest version from claude.ai/download
• OS: Windows 11 Home, Version 25H2 (OS Build 26200.8246)
• CPU: AMD Ryzen 7 3700X 8-Core Processor
• Motherboard: Gigabyte AX370-Gaming
• BIOS Version: F50d (dated 7/1/2020 — latest available for this board)
• BIOS Manufacturer: American Megatrends Inc.

HyperV Status (from Get-ComputerInfo -Property HyperV*)

• HyperVisorPresent: False
• HyperVRequirementDataExecutionPreventionAvailable: True
• HyperVRequirementSecondLevelAddressTranslation: True
• HyperVRequirementVirtualizationFirmwareEnabled: False ← root cause
• HyperVRequirementVMMonitorModeExtensions: True

Root Cause

HyperVRequirementVirtualizationFirmwareEnabled is False. The SVM Mode setting
is not visible anywhere in this board's BIOS (not under MIT, Advanced Frequency
Settings, Chipset, or any other tab). F50d is the latest and final BIOS for
this board — no further updates are available to expose the setting.

WSL install also fails with:
HCS_E_HYPERV_NOT_INSTALLED

What I've Tried

• Rebooted multiple times
• Searched all BIOS tabs (MIT, System, BIOS, Peripherals, Chipset, Power)
• Already on latest BIOS (F50d) — no update path available
• Ran wsl --install as Administrator — fails with HCS_E_HYPERV_NOT_INSTALLED
• Enabled Virtual Machine Platform and Windows Hypervisor Platform via

optionalfeatures

Expected Behavior

Cowork should either work, or display a clear message explaining that the
hardware/OS combination is not supported, rather than just saying
"restart your computer."

Notes

• Regular Claude chat works fine — only Cowork is affected.
• The Ryzen 7 3700X fully supports AMD-V/SVM — this is purely a BIOS

visibility issue on the AX370-Gaming with F50d firmware.

• Related issues: #27316, #29887, #32004, #42227, #45715

What Should Happen?

Cowork should work

Error Messages/Logs

Steps to Reproduce

See description in What's Wrong above.

Claude Model

Not sure / Multiple models

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Version 1.3109.0

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_