It's quite possible that it was a Windows update that caused the graphics card switch, I've seen reports of that before. It's certainly something worth checking each time your Windows 10 gets updated (including to a new version of Windows 10).
Please note that while you may have the correct version of DirectX 11 or 12 installed, you will still receive the error "“Your DirectX version is unsupported” if your graphics card is not fully compatible.
To check to see if your graphics card is compatible with ESO:
- Click the Windows button to activate the Start Menu.
- In the search box, type "dxdiag" and run the program.
- Click on the Display tab.
- On the right-hand side, look for "DDI version" underneath Drivers. If the number next to DDI version is any less than 11, it means that your graphics hardware does not support DirectX 11 and does not meet the game's minimum requirements.
If you continue to experience issues after updating your DirectX drivers, you should check to ensure that your computer’s hardware and operating system meet the game’s minimum specifications here.
Elsterchen wrote: »I would try the following:
1) You can check if your nvidia card is active using the hardware manager.
2) You can set the PhysX of your Nvidia card in the Nvidiacontrolpanel (sry I only know the correct german word: Nvidiasystemsteuerung) <- maybe you need to reasign your nvidia card to eso, too (sometimes all settings are resetted when updating drivers)
Good luck