If you have a wireless connection and one day it suddenly doesn't show your router then it's an obvious microsoft update, if you have automatic updates on it may just update your wireless drivers which can cause it to not connect to the router or even see the router in wireless connections.
Roll back with a system restore to before some of the last updates then turn off certain updates in the mircosoft updates...
this should fix it
Roll back with a system restore to before some of the last updates then turn off certain updates in the mircosoft updates...
this should fix it