furbearingmammal
Super Moderator
Toshiba makes nice, but underrated, laptops. I like them. Bit of a dearth of USB ports, but that's acceptable to me. 
Okay, you need to go to:
Control Panel> Network and Sharing Center> Manage Wireless Networks
Now delete your tethering profiles and try again.

Okay, you need to go to:
Control Panel> Network and Sharing Center> Manage Wireless Networks
Now delete your tethering profiles and try again.