Random Sudden Lines on Mac Display
Hi All,
So I was in school and suddenly my mac had some random lines that were quite thin and covered up the whole display. After resetting the mac the lines are still there however the lines fade away and the screen becomes grey. Also I connected the mac to an external monitor and I can login and everything but when I do login the external display just shows the wallpaper and cursor. To help, the keyboard backlight works, the caps lock button icon lights up and the cursor on the display works. By the way I updated to Mac Os Big Sur a month ago. Please HELP because this just doesn't make sense as I cant figure out if it is a hardware issue or a software issue.
MacBook Air 13″, macOS 11.2