This will open the device manager, display all installed driver list,.Press Windows + R, type devmgmt.msc and ok.It is because of a simple modification in power management. But, Sometimes, Your keyboard and mouse may prevent Windows from doing it. You press on the keyboard or mouse to make your PC wake up from sleep mode. Tweak Power Management for Keyboard and Mouse If the problem is not complex, it should fix it.Click on run the troubleshooter and follow the onscreen instructions.Now, Click on the Update & Security and then go to Troubleshoot.