Learn how to get your Mac fixed and how much it will cost. Make an appointment for a 'hardware issue'. In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment You can always have it looked at in store, if it decides to get worse. 'Dampen a soft, lint-free cloth with water only, then use it to clean the computer's screen.' Notebook computer- recommended course of action: Don’t spray liquid directly on the screen. Then dampen a clean, soft, lint-free cloth with just water and wipe the screen. It is also worthwhile to say that my desktop computer's monitor don't have that pattern. To clean the MacBook Pro screen, first shut down your MacBook Pro and unplug the charge cable and the power adapter. The pattern is still there after gently wiping my screen with a microfiber cloth. I'm not completely sure whether this has been there since the beginning or were produced after cleaning it for the first time and it is mostly noticeable on sunlight. Dampen a soft, lint-free cloth with water only, then use it to clean the computers screen. I recently noticed something strange on my Macbook's screen that I'd describe as vertical stretch mark-looking water stain-like mark pattern (see the picture). To clean the screen on your MacBook, MacBook Pro, or MacBook Air, first shut down the computer and unplug the power adapter.I've cleaned it a couple of times using Whoosh Screen Shine the same product I use to regularly clean mi desktop computer's monitors. Hello guys, I recently got a Macbook Pro.