Having problems connecting to the Internet on your Windows machine? Windows does a pretty good job of determining if there is a problem in Windows that is preventing the computer from accessing the Internet and then fixing it.
Before your computer can access the Internet, it needs to pass through the cable modem or router provided by your ISP. A misconfigured or malfunctioning router will prevent all your devices from connecting to the Internet.
Operating related problems;
Disabling the network card and then enabling it again. Sometimes that will help the computer get an IP address if it didn’t already have one.
You can do this by clicking on start and typing ncpa.cpl. Right-click on the network card and choose Disable. Once disabled, just right-click again and choose Enable.
If this doesn’t work, you can try uninstalling your network card completely. When you do this, you have to restart your computer and Windows will reinstall the network card automatically. Click on Start, type in Device Manager and then expand Network adapters. Right-click on the network card you’re using for network and Internet access and then click on Uninstall.
For updating your network card drivers, it might be easier to just visit the website for your computer manufacturer and download the latest driver for your network card from there.