Method 1: registry Method
Open Run Prompt (Windows Key 
+R) Type regedit and Click OK
+R) Type regedit and Click OK
Navigate to Below Key HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System Note: If the System Subkey is Not Listed Create it
Right Click on System and Create a New DWORD
Rename it as
NoDispScrSavPage
Double Click on the DWORD
To Prevent Change
Set the Value Data 1 and Click OK
To Allow Changes
Delete the DWORD NoDispScrSavPage
Method 2: Group Policies
Open Run Prompt (Windows Key +R)
+R)
Type gpedit.msc and Click OK Navigate to Below path
User Configuration/Administrative Templates/Control Panel/Personalization
Double Click ON Prevent Changing Screensaver
To Disable
Click Enabled radio Button
Click Apply
To enable
Click Disabled Radio Button and Click Apply
