So I have installed Windows 8.1 64 on my newly built computer but it is not picking up on my internet. It says "No connections are available" under Networks and if I click it it sends me to "Install a driver for your network adapter. Windows does not detect a properly installed network adapter. If you have a network adapter, you will need to reinstall the driver." What does this mean? It says the problem is "Windows could not find a driver for your network adapter" Where do I get this driver from? I have a modem blinking green which others in my house are using with laptops but my computer isn't picking up on it or something. I have the ethernet cable hooked up to my computer and modem so whats the problem? Shouldn't I have gotten the drivers when I installed Windows 8.1?
It means there is no driver installed for your adapter. You need to go to the motherboard manufacturer's website, and download the appropriate driver. It sounds like you are using a desktop, so I'm assuming you're using an ethernet cable. You'll need to download and install the ethernet driver.
Unfortunately, you need the driver disc that came with the moterboard, or you have to download the driver, before it will be able to connect to the internet. And if you have to download the driver, you obviously need to use a different computer to do it.