Here are some steps you can take to troubleshoot your network adapter:

1. Check if the network adapter is correctly connected to the PC.
2. Check if the LED lights on the adapter are lit up indicating a data connection.
3. Check to see if the local area connection is enabled via the device properties section.
4. Check the DHCP is set up on the local network.
5. Try to reset the adapter and reinstall the driver.
6. Check if the same adapter is working on a different network.
7. Contact the manufacturer of the adapter if the adapter is still not working.