ok, connect the cable and then update the WiFi Driver.
use the control panel->Admin Tools->run as admin (Computer Management) ->device manager
expand the [+] network adapters and find the WiFi device; double click
Click the Driver tab and then the Update Driver button.
Likely will need to reboot.
Now try to see if your device even sees your router;
Be sure the wifi feature is enabled on your router AND on your computer too.
Use the control panel->Wireless Wizard to find routers - - are there any and is yours seen?