Hey hope you are doing well, when I get on my school Chromebook to do work I have these random lines on my computer screen and don’t know how to get them off. They are not scratches because when I rub the screen it’s not bumpy or cutting me. The lines appear on certain websites but some they don’t. When I go to class link to do my assignments I have those lines but when I go to google slides and hit “present” they are gone. Anyone know how to fix the problem?