My parents have somehow disabled the wifi adapter on their PC so that it appears not to exist. It seems to be connected because the lights on the back of the wifi card are on. But if I look in device manager under network adapters where it should be, it is not there, even if I show hidden devices. The only thing I can think of is to remove the wifi card, start the PC without it, shut down and put the card back in the slot, then start the PC and hope that it recognises the wifi card as new hardware. Before I try that, can anyone suggest a better way please? Edit: tried taking the wireless card out and putting it in a different slot, PC still won't recognise it.