This is on a laptop that has a wireless connection. Would this part be different?
1. Right-click the network icon in the System Tray.
2. From the pop-up menu, select "Diagnose and Repair".
3. Click "Automatically get new IP settings for the network adapter 'Local Area Connection'". At this stage there is annoyingly no "Reset network adapter" option.
4. In the "Windows needs your permission to continue" box, click Continue.
5. Wait for the "Repairing" window to complete (takes a while).
6. In the Windows Network Diagnostics window, click "Reset the network adapter 'Local Area Connection'".
7. You should see "The problem has been resolved".
8. Click Close.