I bought a refurbed mid-2017 Macbook Air last month without Apple Care. Yesterday as I was leaving my studio I slipped on ice and fell on my back. My computer was in my backpack. As far as I'm concerned it was painful, but I didn't black out from pain. I'm glad to be young and ok. But I'm unemployed now and this is my only asset, and I plan to start jobhunting in 4-6 months. It would be great to know how to give it a run-down before I run to the Apple store and maybe get charged a ton for what isn't wear and tear damage.

I have checked that all my ports are working. And the S.M.A.R.T. disk status is verified.

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A post shared by Polar Vortex Jen (@angrybadwoman) on Feb 8, 2019 at 8:36am PST

As you can see there's a dent in the bottom and part of the casing has become unhinged. I'm worried this is going to expose the machine to possible spillages or humidity and dust. I've tried pressing it back down slightly. If I go to a third party repair service I've heard Apple apparently has installed some kind of sticker to show a non-Apple service opened the casing. Any suggestions on how to proceed?