1. Create a monitorpowercfg.exe (or monitorpower.exe) shortcut on the desktop
2. Right click on the shortcut you created, modify the shortcut key for F9 and try the sleep computer. If the monitor does not wake up, press one F9, and then move the mouse to see, is not it!
The principle is very simple, is to let (tell the system) monitor and then fell asleep once, and then move the mouse or keyboard can wake up