This document details how to uninstall and reinstall a network adapter for the purpose of troubleshooting networking problems on Windows 7, 8, and 10.
If a user is having issues connecting to or staying connected to a wired or wireless network, an easy first step at troubleshooting is to uninstall and reinstall the network adapter. This is also a good step to try if a user is able to connect to a network but are unable load web pages in their browser. This fix will bring the network adapter back to default settings and will resolve issues a large percentage of the time. If the the network adapter doesn't show up in the list it could indicate a hardware issue with the adapter.
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If the device is successfully reinstalled it will show back up under the "Network Adapters" drop-down. Reboot the computer and see if the connectivity issue has been resolved.
If the issue is not resolved click here for instructions on restarting the windows networking service.