Idle all right, open the Lenovo keyboard manager
Ever since, he has pressed the Fn + 4, the computer is idle, but the problem is, no matter what button I press, computers are black, so I forced shutdown, then boot, and finally the Internet to find a solution.
First, open the Control Panel, open Hardware and Sound 
and then open Device Manager 
to find the network adapter 
find below the yellow mark s stuff, then right-click to open the properties, find power management, then "Allow this device to wake the computer" in front of hook cancel it 
causes the computer to standby again, and then press the spacebar mad, wait a minute, you can hear the voice of the fan rotation, the computer wakes up, come out! computer