Generally, after installing or updating the network adapter driver successfully, the computer can be connected.
If not, please restart your computer., you will have a clear understand of your computer drivers condition.
The problem always occurs when you update Windows systems or have ignored to update the network driver for a long time.: Right click the network adapter driver and you can choose uninstall or update the driver.
After a visit to Windows Update, there will probably be one or two drivers at the most which need to be downloaded from a third party.It will begin to scan automatically when you run it.After scanning, a list of all your drivers is available.It is the only connection which makes computer to communicate with network adapter.
Thus you can surf the Internet either wireless (Wi-Fi) or LAN.
Please pay attention to the compatibility so that it can perform well on your computer.