I was happily using my toshiba satellite with 8.1 windows. I plugged a printer in and since then Its been unable to detect any wifi connections - usually not only my rooter is picked up but also various neighbours. Now nothing. I've tried turning off the router, restarting etc. toshiba help says that you can switch off (or on) wifi by a button, I have no button, or a combination of keyboard buttons. Please help. Thank you, Karen