I would try uninstalling and reinstalling the wifi card drivers.
1. Search for "device manager" in the windows search bar.
2. Select "network adapter"
3. right click on you wifi driver. It usually have "wifi adapter" in the name.
4. Select the uninstall option
5. Restart your computer
6. Search for and download the latest drivers. Depending on what you have, you may need to search for a particular wifi card, laptop model, or mobo model.
Obviously you are not going to have a wifi connection, so you may need to use an ethernet cable, or you can download it to a flash drive.