Hi all, This example shows how you can turn off your monitor, so even mouse move can not turn it on back. The main function to turn on/off monitor is taken from Help file example, and was changed for this example's needs. The function _IdleWaitCommit() i think written by amel27, and also have been changed. Here it is: #NoTrayIcon Global Const $lciWM_SYSCommand = 274 Global Const $lciSC_MonitorPower = 61808 Global Const $lciPower_Off = 2 Global Const $lciPower_On = -1 Global $MonitorIsOff =