To really sort it out we need more info and a few questions answered. It could be just a
driver problem. I know on my Acer Aspire a lot of those custom special function keys didn't work until I installed the
drivers. I don't remember if the WIFI key was one of them though. I have noticed though that if I use that button to turn the adapter off I can't turn it back on any other way.
What I would like to know is, did it ever work before?
Is this a new windows 7 install?
Was it an upgrade or clean install?
Were all the
drivers installed?
Is anything flagged in device manager as having a problem?
System specs would be nice too.