A couple of days ago my laptop connected fine to wifi. But now it shows No Connection - No connection available. I've tried everything. FN-F2 (Which is my wifi key). Went into my Bios tried to figure out if something in there was wrong. I checked my network adapters, no corrupt files, and no yellow exclamation points. I even reset my laptop back to factory setting. It still says I need an ethernet cable. Any help would be appreciated.