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Additional network troubleshooting steps you can try include restarting the router, trying a different network cable between your PC and router (or turning off Wi-Fi and trying a wired connection), and testing the connection to the internet with another computer.
An old network adapter driver can cause compatibility issues, including connection problems.
Once your computer restarts, open your web browser and check to see if you can connect to the internet.
In addition, you also want to make sure there isn't a connection problem between your computer and the modem/router.
The following steps will delete the network adapter driver from your computer, as such it's recommended that you download the latest driver from your manufacturer's support website.
Of course, if you can't connect to the internet, you'll need to do this from another computer with an internet connection, and then save the driver on an external drive, in case a manual installation is required.