Here are some steps to resolve a network adapter driver issue:

1. Check the device manager to verify that the adapter is installed correctly;
   
2. Troubleshoot the hardware;
   
3. Check for updated drivers and install any that are missing;
   
4. Check the manufacturer's website for a new driver;
   
5. Uninstall and reinstall the driver and adapter;
   
6. Restart the computer;
   
7. Run system diagnostics to determine the issue; and
   
8. Check the network adapter's settings in the network adapter properties.