I definitely know how this would feel, because I've been in the same type of situation.
Here is my story,
I was terrified as **** when my previous Samsung Chronos laptop decided to give up its life and die with all of my important school documents and reports that I've been working on for the past 4 months (some 3 40 page fully written documents about fire hazard and fire prevention).
Firstly I told to myself it was just a random blue screen and everything should be working normally after I restart my laptop. Everything was normal, just like what I've expected but then another blue screen came along with a very high pitched screech sound coming from the main speakers after just 3 minutes of runtime.
I've panicked because of the sound. Then I realized my laptop is dying after 5 months of ownership.
What could I do, told I to myself. I couldn't just open it since it would void the warranty and have a 3 kg slab of aluminum stuck forever.
I turned it back on and plugged a thumb drive in it and started to save as much as possible and after 4 attempts I had recovered most of the important data in that laptop. (I did lose couple of folders full of family pictures unfortunately ).
Later on that same week, I RMA'd the laptop to the shop and they gave me full refund of the product after they fully verified that I didn't cause anything by myself.
Since then I've learned my lesson and now I'm always backing up my files at Onedrive cloud storage, school server and at home to prevent myself stuck again with this nasty situation.