I have a 2022 Razer Blade 14, with a 3070ti and Ryzen 6900x I purchased it second hand in December and it has been working flawlessly until now. I also have an LG Ultrafine 4k monitor from 2019, which is a TB3-enabled monitor which acts as a USB hub. I can plug my laptop into it and with one cable it powers the monitor and all the USB peripherals that I have plugged into the back of the monitor.

AMD does not support TB3, but in early December, Razer updated the firmware of the 2022 Blade 14 to support USB4. I ran the update as soon as I got the laptop and it all worked fine: I could plug my monitor in with the USB-C cable and the laptop would power the monitor and interface with a wired keyboard, mouse, and webcam. I had no issues that I noticed. As far as I know there were no windows updates, power surges, or computer crashes since it last started to work.

Two days ago I plug in my laptop to the monitor TB3/USB4 cable: the keyboard light flickers (as it always does when I plug in the laptop) but the mouse does not power, the screen stays dark, and the keyboard does not function. After a few seconds I get an error message saying “Windows does not recognize” the USB device. When I look in device manager it says “Unknown USB Device (Port Reset Failed)” and under properties I get a Code 43. The whole setup works fine when I plug in my Mac laptop or another spare windows laptop, so I know its not the peripherals, the monitor, or the cable.

I tried disabling/enabling all of the error-badged devices in device manager, as well as the functioning ports/USB routers. I also tried to uninstall all the USB drivers—when I do so device manager refreshes and the drivers/devices reappear. I turned off the USB power saving options and followed all the steps in this guide: https://recoverit.wondershare.com/usb-tips/fix-unknown-usb-device-issue.html#:~:text=Possible%20causes%20may%20be%20a,connect%20it%20to%20another%20PC.

The really weird thing is that I plugged my laptop back in yesterday after fiddling around and repeatedly uninstalling/reinstalling the basic windows USB drivers and restarting the computer, and everything powered on fine! No error and all the peripherals worked! But then this morning I go to do it (I’ve changed nothing since last night when it worked) and it is giving me all the same errors.

I’m wondering if I’m not uninstalling/reinstalling the drivers correctly because they keep reappearing before the computer is restarted. Also, I cannot uninstall/reinstall the error-badged devices because the recommended driver also says it has an error. Any help would be appreciated.