Apple MacBook Mac Notebook "horizontal white lines screen" Questions

...small white lines going horizontal across my screen. Anybody know what's wrong? HELP :( White lines is either the screen or more likely the graphics chip. try a reinstall see if that fixes

horizontal white line after few weeks there was one mor this time a little bigger one. please lemme wats wrong with it? Hi Which Mac is this? It seems like if this is happening slowly and is permanent

...White Horizontal line running through the screen about a cm wide this comes up on boot up and only goes away When i take a screenshot can anyone help..could it be the lcd screen? Being a whole ...

...horizontal lines which starts from top and goes till the bottom and the whole screen turns white but when i press the screen from top vertically everything goes normal till i keep pressing.I want to ...