Lastly, sometimes the drivers don't take. This is from a NINA developer, but the fix here is for everyone who's camera isn't recognised by their computer
https://daleghent.com/2021/02/1q2021-qhy-native-driver
In case of USB driver update problems
Some folks have experienced issues updating the USB driver, where it appears that the driver update did not take. There is one thing to try if this is the case:
1. With the camera disconnected, right click Start and open Device Manager
2. Go to the View menu and select Show hidden devices
3. Expand the AstroImaging Equipment section
4. Right click QHY5IIISeries_FW, select Properties, and then the Driver tab
5. Press the Update Driver button, and select Search automatically for drivers
6. Also do steps 4 and 5 for the QHY5IIISeries_IO device
7. Plug in the camera. Verify that it is on the newer device driver version
After the above steps are done, and barring any deeper issues, the driver and firmware loader for the camera should be updated to the version that was installed. QHY are aware of this issue and are looking into it.
Give that a go and see what happens. Might save you from buying a new camera
