Used SimpleMonitorOff for Windows?
Developer’s Description
By Coruscant
Note: Unlike many similar applications, SimpleMonitorOff does not require any additional hotkeys, mouse clicks, or shortcuts - it responds to events sent by Windows itself, so will respond to you locking your computer however you choose to do it, rather than expecting a specific hotkey combination or shortcut.
SimpleMonitorOff is compatible with Windows 7 onwards. It has been explicitly tested with Windows 7 and Windows 10, but should work with all compatible versions of Windows. You will require local administrator privileges to install it but thereafter it will work fine with Standard (a.k.a. Limited) User accounts.
Used SimpleMonitorOff for Windows?