Try the fixes below to determine what is preventing your monitor from going to sleep. If Windows 10 won’t put the monitor to sleep, there may be several reasons behind it. Monitor Won’t Sleep Automatically (Solutions) The default settings generally have a small time-out period so your monitor will likely go to sleep in 2-5 minutes. If a user never changes it, it will use the default setting and enter sleep accordingly.
The sleep function for the monitor is automatic. The setting is applied on a per-power plan basis and on a power state-basis i.e., if the system is running on battery or if it’s plugged in. Both the display and the system can be set to enter sleep after a period of inactivity that a user can choose. Users can choose when some of the components on their system are put to sleep. This sleep process starts with the screen locking on inactivity, followed by the monitor turning off i.e., entering sleep, and ends with the entire system entering sleep mode. Windows 10 has a built-in feature where, if your system is idle for too long, it will begin to put certain components to sleep.
