Method 1:
Click Start Button
Type cmd
Right Click on Command prompt
Click Run as administrator
To Disable Screensaver:
Reg add “HKEY_CU RRENT_US ER\Control Panel\Desktop” /v ScreenSaveAc ti ve /t REG_SZ /d 0 /f
To enable screen saver:
Reg add “HKEY_CURRENT_USER\Control Panel\Desktop” /v ScreenSaveActive /t REG_SZ /d 1 /f
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 Enable Screen Saver
To Enable Screen Saver
Click on Enabled Radio button and Click Apply
To Disable Screen Saver
Click on Disabled Radio Button and Click Apply
