Any question answered...

Try uninstalling the wifi card totally and then reboot windows with it plugged into the router. Hopefully Windows Update should do its thing and find the appropriate driver. I've found recent versions of Windows to be pretty good at locating drivers automatically.

If that doesn't work then go to the toshiba website and see if you can download drivers (or whoever makes the motherboard/wireless card https://www.piriform.com/speccy should tell you).

Thanks - the windows update seems to have pushed it into downloading the drivers too.