Problem: External displays have suddenly stopped working (Displayport over USB-C).
I have a Razer Blade 14 (2024) with all the latest drivers installed:
- BIOS: Razer 1.06
- Ryzen 9 8945 HS, Radeon 780M (Adrenalin 24.12.1)
- NVIDIA RTX 4070 (Studio Driver 566.36)
- Win 11 (10.0.22631 Build 22631)
External displays (both at home and at work) have stopped working randomly the last year, but the frequency has increased lately.
Charging and ethernet over USB-C works fine on both the left and right port, it’s just Displayport-over-USB-C that is very flaky.
Inspired by this thread
… I have tried:
- Updating Windows
- Updating Razer Synapse
- Updating BIOS version
- Updating BIOS settings
- “Enable USB charging”: “No” -> “Auto mode”
- Switched GPU mode from “NVIDIA Optimus” to “Dedicated Only”, and vice versa
- Updating drivers for both GPUs
- Tried the “stable” non-gamer variants of GPU drivers
- “DISM.exe /Online /Cleanup-image /Restorehealth” and “sfc /scannow“
- Restarting multiple times in a row(“soft” and “hard” (hold power button down until the power LED flashes white))
I have not found any consistent patterns for when external displays stop working and what makes them start working again.
