I followed this instruction to setup my 3.5 LCD screen:
https://www.instructables.com/Raspberry-Pi-4B3B-35-Inch-LCD-Touch-DisplayScreen-/
Then suddenly my monitor turns black screen and my LCD only shows white screen. I can't use my RPI since it has black and white screens that's why I can only use its memory card to fix it. What should I do, I already tried editing its config.txt but nothing works. Here is the content of its config.txt: