Hi Don't know if this is a little late to help, I have a Toshiba laptop and had the same problem as you when I updated (automatically ) unfortuanately at the end of Dec.
When i tried to connect to a wireless network there was no wireless on my laptop despite the switch being on.
I restored the laptop to a previous point ( Which removed all the updates from Dec) and it worked again.
Don't know which update is responsible but hope it helps.
John