The command for sleep :
rundll32.exe powrprof.dll,SetSuspendState 0,1,0
------------
Note: you can make a shortcut on the desktop
and set the target to the command up top
this shortcut will now put your computer to sleep
------------
- however, it will hibernate instead of sleep if you don't
turn the hibernation off.
Here's how to do that:
Go to the Start Menu and open an elevated
Command Prompt by typing cmd.exe, right clicking
and choosing Run as administrator. Type the following command:
powercfg -hibernate off