Windows 8 - Packard Bell: Wifi won't turn on after flight mode.?

Basically, I knocked something on the keyboard and now the wifi just doesn't want to work. Whenever we go into the settings for it, the option to turn the wifi on is greyed out. We've re-installed the drivers and everything, it did nothing.
The model is a EasyNote TV43CM. Does ANYONE know what to do? I don't want to restore my laptop, but I'm worried I might have to.