After the Windows 7 system clears the registry, it cannot connect to the Internet.

1. On the desktop, right-click the network icon in the lower-right corner, and click "Network and Sharing Center" in the management window. Click "Change adapter settings" on the left, as shown in the following figure.

2. on the right side, you will see a "local connection". Right-click "local connection", click "properties"-"install", and select the network function type., select the protocol, and then install it from the disk. Select c: \ windows \ inf to find 1394.inf. then add the protocol and add the tcp/ipv values of 4 and 6.

3. After the operation is complete, press win + r to open the command, enter cmd, enter "netsh winsock reset" in the command window, and click press Enter.