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My cat bit the top right of my Mac and a stripe appeared on the right side. After a few hours the screen went black. Everything else works but the screen is black

I’m impressed! Your cat has a very strong jaw! Sadly, your display was damaged by JAW’s the cat ;-{ Here’s the guide you’ll need to follow: MacBook Air 13" Early 2020 Display Replacement Sadly, this display is hard to find presently: 13” MacBook Air Display Bezel - Silver, Apple P/N 661-09734 Just be careful as many jobbers who list the part don’t really have it or the site doesn’t de-list its availability.