Whenever the computer gone into the sleep mode, it will never wake up again. Just got the white cursor and black screen. I tried the Win+P thing but didn't work. Also tried to turn off fast startup, still didn't work. Edited: Don't know what version of windows 10, just updated by itself few days ago without my consent. No problem found yet even if the display is dimmed as long as it doesn't go into sleeping mode. No new program was installed prior to and after the update.