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1. Step 1: Find the problem through network diagnosis, which indicates that the local connection has no valid ip configuration. First of all, let's check whether there are any problems with the router settings, such as whether the DHCP function is turned off (DHCP is to automatically assign IP addresses to computers). If this feature is turned off, you need to set the IP address manually. ? 2. Step 2: Enter the "Network and * * * Enjoy Center" and click "Change Adapter Settings" on the left, as shown below. 3. Step 3: Right-click "Local du Connection" and select "Properties", as shown below. 4. Step 4: Enter the windows7 local connection property setting interface. First, we will delete the √ before "Internet Protocol Version 6 (ICP/IPv6)". ? 5. Step 5: Select "Internet Protocol Version 4 (ICP/IPv4)", click the following properties, and set the IP address as automatic acquisition. 6. If the above settings have no zhi effect, it is recommended that dao focus on checking the router settings and whether there is any problem with the network. For example, dial directly with a cat to check whether there is any problem with the network. If there is no problem, check the router again, but it still doesn't work. It is recommended to reinstall the network card driver.