I've just been experiencing some random drop-outs with my studio desktop pc's wifi, so I went online and did some googling for solutions/fixes, and found this website:
Windows tends to just look for the latest main version driver upgrade, so you may get a driver upgrade from V2.6.2 to V3.2.0, but not the very latest V3.2.6 upgrade that you may need. So it's always best to either manually check the manufacturer's sites or use one of the driver update programs. I used one and got a whole load of updated drivers that windows hadn't updated.