I've just switched back to Windows 7 ultimate from Ubuntu, and I am currently having wireless internet problems.
It won't discover any networks what-so-ever, and I'm forced to use an ethernet cable to connect to the internet.
I did a clean install, wiped everything, and re-installed what I believe to be all of my drivers.
I have a Gateway NV55C laptop.
In any case, if you would like to get a hands on look, I'm able to get teamviewer and connect with the ethernet cable.
