My netbook had excellent WiFi range and speed on Win 7.
When I ran the compatibility check for Win 8 upgrade it said my WiFi was not compatible, but re-installing the driver after the upgrade would fix it.
After the upgrade's final re-boot I got no errors for the WiFi, but soon noticed slow connect speeds and poor range. I de-installed the driver and re-installed, but no change and no updated driver on the web site. There was a video flicker when using the browser, but that cleared up at some point from one of the updates that have far exceeded 1 GB so far, but the WiFi still sucks, I even installed a USB WiFi dongle, but to no avail so I find it hard to believe it is a hardware/driver issue. I wish I had not been lured by the $14 upgrade offer for that netbook.
I bought a notebook for my sister that came with Win 7 on it I warned her not to upgrade to Win 8, but now they invade you system with a blue bar making you go to their site for the upgrade on my Win 8 (Subsequent times they give you a choice to be reminded) I hope that doesn't happen for Win 7 owners.