Plug and play midi keyboard frequently stops working

I have Musescore installed on a Windows partition on a Mac. I use a Kestation Mini32 keyboard with it. Frequently the program will stop recognising the keyboard. I've tried all the commonly recommended fixes - restarting audio and Midi devices, enabling Midi input. I always ensure that the keyboard is plugged in before starting my computer, and I usually open Musescore before opening any other programs that might use the sound card.

I suspect that this last point is key, as the problem most often occurs when I've opened, say, Youtube, and played a song, then returned to Musescore. Sometimes it will correct itself spontaneously, for no reason I can fathom, or if I open a new file in Musescore, or restart the program. Other times I have to restart my computer entirely, which doesn't always work. Conversely, tonight the problem is happening every time I click on another program, even if it's not an audio program. I'm trying to transcribe a score from a PDF, and if I click on the PDF, then return to Musescore, it;s stopped recognising the keyboard.

The keyboard is plug and play. The cable seems to be fine, and the device installs itself correctly. I'm not trying to input notes from the keyboard, just play the notes.