I have the same problem on my ASUS Flow X13 with MediaTek MT7922 on Windows 11.
From time to time and randomly (every few days), I lose connectivity to Wifi, and I see this error
I've got installed every update of the driver, and non of them fixed my issue. It seems it start working randomly after a while until it stop again a few days later. So far updated to latest version of the driver and the problem is still there: Device not started (mtkwlex)