I built an eGPU setup with a 5070ti, 750 watt ATX power supply, and the Orara dock linked below.
Got everything set up and it was working great once I disabled the integrated Radeon graphics.
Then Vantage told me I had updates including chipset and BIOS updates. I installed the updates and now the computer won't recognize that the eGPU is connected at all. I even wiped everything and reinstalled Windows. Nothing. I tested the Thunderbolt port by plugging an external display into it directly. Works fine.
I can't find any BIOS settings that seem to help and I can't install the Nvidia drivers. Anyone else encounter this issue? Any suggestions for fixing it?
BIOS version is N3CN37WW
AMD chipset driver version is 1.1.0.20
Based on your description, the BIOS and chipset updates likely caused a compatibility issue with your eGPU setup, preventing the Thunderbolt controller from properly initializing the external graphics card.
It's a known problem with some systems, particularly after significant firmware updates. Since you've already tried reinstalling Windows, the issue is almost certainly not a driver problem within the OS but a deeper, system-level conflict.
Here are some suggestions for fixing it:
1. Roll Back BIOS and Chipset Drivers
The most direct solution is to revert to the versions that worked. The new BIOS and chipset drivers may have changed how the Thunderbolt port and PCIe lanes are managed, breaking the eGPU connection.
Roll back the BIOS: Check your laptop manufacturer's website for an older BIOS version. Some manufacturers provide a utility to flash a previous version, while others may prevent it. If you can, go back to the BIOS version you had before the updates.
Roll back the AMD chipset drivers: The AMD chipset driver version 1.1.0.20 might be part of the problem. Go to the AMD support website, find your chipset model, and download an older version of the drivers that were working with your setup.
Use a tool like Display Driver Uninstaller (DDU) to completely remove all AMD and NVIDIA drivers before installing the older chipset drivers and trying to connect the eGPU again.
2. Check Thunderbolt and PCI Settings in BIOS
Even if you've already looked, it's worth checking again for any subtle changes the BIOS update may have made. Some new options might have been added or a default setting changed.
Thunderbolt Security: Look for a "Thunderbolt Security" or similar setting. If it's set to "User Authorization" or "Secure Connect," try changing it to "No Security" or "Legacy" to see if it allows the eGPU to be detected.
PCIe Slot Configuration: See if there are any settings related to PCIe lanes or power management. Look for options like "PCIe Link State Power Management" and ensure it's disabled.
Sometimes, a BIOS update can enable power-saving features that put the Thunderbolt port to sleep, preventing the eGPU from being detected.
3. Power Cycle and Connection Troubleshooting
While this may seem obvious, a full power cycle can sometimes resolve a hardware detection issue that a simple reboot can't.
Disconnect everything: Unplug the eGPU dock from the laptop and disconnect its power supply from the wall.
Power drain the laptop: Shut down your laptop completely, disconnect the power adapter, and if possible, remove the battery. Then, press and hold the power button for 30 seconds to drain any residual power.
Reconnect and restart: Reconnect the eGPU's power, plug the Thunderbolt cable into the laptop, and turn on the laptop. Check if the eGPU is now recognized in Device Manager.
4. Check for a Known Issue
It is possible that other users have had the same problem. Check online forums and communities dedicated to your specific laptop model and the eGPU.
Search for "[Your Laptop Model] N3CN37WW eGPU issue" or "[Your Laptop Model] Thunderbolt not detecting eGPU after BIOS update". This could reveal a community-developed workaround or confirm a known bug that needs to be addressed by the manufacturer.
I hope these steps will help You 😍
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