IzabelaB :
Thank you for trying - my PC is a desktop type computer...
The Paladin :
I cannot answer the button question as can only look specification of a laptop or its manual with a model number.
This is not a laptop or desktop specific issue.
If wifi card came with computer then lookup information on your model of computer,
If you added the wifi card then lookup information on that model of card.
You likely just need to uninstall (not delete though) and reinstall the wifi driver and then it will work.
Is this a a usb wifi card, a pci-e card you put in, a pci-e card that came with the computer, or wifi built into the motherboard?