Hi,
In regard to your issue, I suggest that you can take these following steps:
- Open My Computer>Properties>Hardware tab>Device Manager
Click to locate the network adapter, and then click Uninstall. Restart the computer, and then let the system automatically detect and install the network adapter drivers.- If you still can't see network adapter in the Device Manager, you can check BIOS to see whether you can find a network adapter.
For more details, please refer to the following link:
how-to-troubleshoot-missing-network-connections-icons-in-windows-serve
Please remember to mark my reply as answer if it's helpful to you, thanks!