Try to connect a ethernet cable into the computer, to give it a solid internet connection.
if you can't, use a computer that has internet. you may need to download the drivers with the "other" computer and install it on This computer.
If you have the My Computer icon, right click on it, and click Manage. Click Devices, and you should see a bunch of devices, one being your network adapter. If you connected the internet to your computer, you can double click on your network adapter in this list, and search for the drivers. It should say Update Drivers, or Look online for drivers.
If you didn't connect it online, than copy the driver names, and search for them on the Other computer. Download them, copy them with a usb or cd drive, and install them.
restart your computer.
hope this helps!
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