My laptop was Win-8.1 out of the box (Much to the surprise of Toshiba).
I have heard that in some cases you need to update with Wi-Fi driver.. This is a HARDWARE issue though, not a windows issue, so contact the computer manufacturer to see if they have an update for the driver.
That said.. I hook this puppy up by Blue Wire when I can (What's blue wire,, My cat-5 cable is blue)
Actually I have told it to "Forget" the house Wi-Fi, I use kind of a Rube Goldburg hookup.. Wi-Fi "Modem" (Linksys WGA54G Wireless game adapter) ON Roof (or flag pole or picnic table or.. wherever works best) Picks up park Wi-Fi. Feeds house router (A belkin) which Wi-Fi's to my phone, printer, tablet and hard wires to my xp machines, this laptop (Either way) and my Replay TV units. That way I can toss Video about like no tomorrow (Never sees the Linksys) moving it from Replay DVR to File Server (XP-Main) to Laptop to external USB stick, stream shows back and forth, command programs to record, check the program guide,, the to-do list, and all the other features.
Or, if the Linksys/Belkin loose lock, I unplug and go Wi-Fi direct from park to laptop.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times