Editing Openai/69492970-fd84-8012-81ad-fad51507b9fe (section)

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Windows “Fast Startup” basically half-hibernates the system, and Thunderbolt devices hate that.

Fix:
# Control Panel → Power Options
# “Choose what the power buttons do”
# Click Change settings that are currently unavailable
# Disable “Turn on fast startup”
# Full shutdown → cold boot (not restart)

A restart is often worse than a full shutdown for eGPUs.

===== On reboot, the TB controller sometimes doesn’t re-enumerate the eGPU. =====

Things to try:
* Boot with the eGPU already connected and powered on
* If that fails, try: - Boot without eGPU → log into Windows → then plug it in
* Check Thunderbolt Control Center: - Make sure the eGPU is listed and marked as “Always Connect” or Authorized

===== The Legion Go’s Z1 Extreme iGPU + AMD desktop GPU is a known pain point. =====

Symptoms match what you’re seeing: works once, reboot breaks it.

Try this:
# Use DDU (Display Driver Uninstaller) in Safe Mode
# Install ONE unified AMD driver, not separate iGPU/eGPU drivers - Usually the Adrenalin WHQL, not beta
# After install: - Plug in eGPU - Let Windows finish detecting before rebooting

If Windows Update sneaks in a driver afterward, it can silently break this again.

===== Windows loves to overwrite AMD drivers after reboot. =====

Check:
* Device Manager → Display Adapters - If you see Microsoft Basic Display Adapter or a mismatched driver version, that’s your smoking gun.

You may need to:
* Disable automatic driver updates (at least temporarily)

===== This happens with some enclosures + TB4. =====

Quick test:
* After reboot (when it “doesn’t work”): - Is the GPU still visible in Device Manager? - Yes, but error code (like Code 43)? → driver issue - No at all? → Thunderbolt enumeration / firmware issue