The error message "network cable is not connected" usually indicates that there is a problem with the physical connection between your computer and the network. Here are some steps you can take to troubleshoot this issue:
Check the physical connection: Make sure the network cable is securely plugged into both the computer and the router/switch. If possible, try a different cable to rule out a faulty cable.
Restart the router/switch: Sometimes resetting the network device can resolve connection issues. Unplug the power cable from the router/switch, wait for 10-15 seconds, and then plug it back in.
Restart your computer: A simple restart can sometimes resolve network connection issues.
Check network adapter settings: Right-click on the network icon in the system tray and select "Open Network & Internet Settings". Click on "Change adapter options" and make sure that the Ethernet adapter is enabled and set to obtain an IP address automatically.
Update network adapter drivers: Outdated network adapter drivers can cause connectivity issues. Visit the manufacturer's website to download and install the latest drivers.
Regards,
Peter