When you say the monitor does not turn off - do you mean it remains powered on or does it prevent shutting down the PC or something is always displayed? As long as you only have video cable connecting the 2 there is nothing that you can do to powering off the monitor. If incidentally you have a power supply that also has a power output socket it will remain powered on at all the time. It is just a convenience to reduce wall socket by 1. The monitor going to sleep when there is no signal is strictly a function of the monitor and not the PC. It does not matter how you initiate the shutdown, my simply pressing the power button or through several clicks via the menu. I normally use a utility called "right click extender" which allows me to add several additional function to the desktop context menu including restart, shutdown, hibernate, etc..