Short version: mouse isn't working and TouchPad doesn't have a wheel function.
Any other way to zoom in/out of the map?
FTR I've a long history with tech support, so I've done the basics. Both USB ports have power, tried 3 mice including a known working one (and installed manufacturer's drivers for it as confirmed by model #), restarted HID service, installed all Windows updates, and even tried a wireless mouse which I hate.