Any other ideas what to do? :/
Nope.... other than going into device manager, selecting the problem mouse, right click and uninstall, if given the option include drivers.
Shut down your computer, plug the mouse into another USB port (actually on your computer / motherboard) and restart the computer. The first failure might have just been a one off.
Failing that perhaps give windows update a try (not usually my go to source but worth a try).
Doesn't look like anything more than a simple USB Optical mouse, so you shouldn't need any thing other than the Windows native drivers.