How to ensure that the ip address in the win7 system is not modified

First open the run window (win+r), enter "ldped;gpedit.msc" in the window, and then click "OK", as shown:

In the pop-up local Group Policy Editor, we expand “User Configuration——Management Module——Network——Network Connection", as shown:
< On the right side of the “Network Connections” option, we found “Enable Windows 2000 Network Connection Settings for Administrators” and double-click to open it as shown:

In the pop-up window, check Select “Enabled”Press “OK", as shown:

Then continue to open in the window on the right side of "Network Connections"; "Disallow access to the properties of the LAN connection component" ”, as shown:

In the pop-up menu, select “Enabled”, press “OK”, as shown:

Setup is complete After we still need to be heavy Start the computer, so that our ip address will not be modified, you can guarantee to use a fixed ip.