Ganyan din sa akin, ito yung solusyon ko.
1. Click Start
2. Search Device Manager
3. Locate "Network Adapters" on the group drivers
4. Find the One of the LAN Adapter must be uninstalled.(Eg.: Realtek PCIe or Realtek or any LAN Drivers)
5. Reboot your PC while plugging LAN
This solution might be correct..