can't find wireless connection

[Roxanne99]

I was running a AVG scan on my HP laptop when the power went out.  When I got it back on my computer would not boot up properly so I found a place to restore it to original state.  Then I could not get on the Internet unless I put the Ethernet cord in computer.  I had wireless connection before and wireless is working everywhere else in the house.  How do I find out if my wireless card is working or not?  It does not automatically find area connections anymore where it used to list my neighbors in the area.  I have a Westell router model 7500 and my computer is the only thing affected in the house. 
I had updated my computer to Windows 10 and when it got restored to factory default it is now Windows 8.1.  Don't know if this matters or not.

[KandoNYC]

check device manager to see if the wireless card is working
go to the manufacturer's support site and download the latest wifi drivers
check if there is a function key that turns the wifi on and off
check if there is a hardware switch that turns the wifi on and off

[patio]

What kind of wireless device is this ? ?
Reason i ask is if it wasn't onboard on the PC and it's let's say a USB dongle then it's drivers were wiped out after the restore...
So if external device simply re-install the drivers for the unit and set up a new wirelless connection...