You can also open File Explorer -> copy & paste Control Panel\Hardware and Sound\Power Options into the address bar -> press Enter to open the Power Options window.
How to stop monitor from going to sleep? Please select Never for Turn off the display and Put the computer to sleep. Locate the Turn off the display option and select a shorter time period.Please click Change plan settings next to the plan you used currently. The Power Options window will show up.Click on the Additional power settings link in the right pane.
Monitor Won't Turn On When You Start Dell/Samsung/HP Computer. You should go to check & change the power plan and sleep settings manually. The next thing to do when your Windows 10 display won't turn off is checking the settings. Read More #2: Change Power Plan & Sleep Settings