Windows7 system can not change the screen saver how to solve

1, click on the start menu on the desktop, and then click on the "ghost win7 start menu" to enter "run", you can open the running program;

2 Enter gpedit.msc in the running program to open the local Group Policy Editor. In the left column, expand “User Configuration”-“Administrative Template”-“Control Panel”-“Personalization 

3, then on the right side of win7 personalized In the window, it is found that "block the screen saver", win7 double-click to open the edit window, and in the edit window, modify it to "ld"; not configured “ or "disabled" ; Then click on the bottom of the OK and Apply button to complete.