Windows 10 I SLEEP NAD MY DISPLAY 1 IS WHITE SCREEN

[rald]

Hi Everyone, I usually do use dual monitors, My laptop screen and external monitor. But today my display 1 (which is my laptop screen) is a white screen after I stay asleep, I don't know why because when I wake up it's a white screen already, and now it's a black screen. I've tried opening the display settings, but in the multiple display settings I can't do anything about it. Pls help me about it Thanks