Cannot establish USB connection

[EclipseMantis]

Hello everyone! I guess I should do the obligatory forum thingy where I say that I'm new and apologize if this is the wrong spot.

Anyway, I've had an HP Prime for about 3 months, and it's no longer connecting to my laptop or desktop (W10 & W11) over USB. I've tried multiple cables, multiple ports (USB 2 & 3), reinstalling the Connectivity Kit, and booting the calc into all the different recovery modes that I can find.

The calculator never shows up in Device Manager, nor does Windows do that little chime, but it does power on when connected, like I had simply plugged it into a charger. It's like the data lanes on the USB connection are severed, but across multiple cables, which doesn't make sense unless the USB connection on the calc is damaged but still accepts power?

I'd really really appreciate any help. Thank you!