A Technological Ship of Theseus
My laptop got knocked off the bed, and, after the fall, the entire keyboard stopped working. The trackpad was still functional, but none of the keys were working. Fortunately, I had a Bluetooth keyboard on hand.
Once I had the new part, it took me only about an hour to disassemble the computer, remove the old keyboard, and install the new one. The process went smoothly, and soon, all was well again.
Make sure you know which screws go back where. Also, make sure you follow the guide exactly in reverse order. I almost had mine all the way back together before I realized that I had forgotten to reconnected the keyboard backlight ribbon cable :/ But overall it's a fairly easy process. At this point, I don't think any of the original hardware is still there (after multiple repairs and DIY upgrade). So, is it the same computer?