To upgrade the memory in my wife's HP 15 laptop - which has become notoriously slow thanks to the upgrade to Windows 10 - you have to do the following:
1. Remove the battery.
2. Remove about a dozen screws off the bottom of the laptop.
3. Remove two "pads" off the corners of the laptop so you can remove two more screws on the bottom of the laptop.
4. Pull out the optical drive.
5. Remove two more flat-head screws along the edge of the entrance to the optical drive.
6. Pry the keyboard up and off, disconnecting it by lifting up a tiny ZIF connector and pulling the keyboard ribbon out of the slot. (Yes, ribbon.)
7. Disconnect the power button connector strip AND the touchpad connector strip - same thing, a ribbon cable.
8. Remove the four screws holding the cover, then gently tug and pry the cover up and off.
9. Remove the WLAN module by unscrewing the one screw holding it in place, then lifting and tugging the module out from the board. (At this point, I'm thinking, y'know, this probably would have been a more logical place to put the memory card slot.)
10. Remove the hard drive... wait WHAT? Yes, to get to the RAM memory slot, you need to REMOVE THE FREAKIN' HARD DRIVE by unscrewing the two screws holding IT in place, then tugging it out, and lifting it up.
11. Disconnect the power cable, speaker cable, fan cable, and the display cable.
12. Remove the two screws holding the system board down, then lift the right side of the board up, then tug the board away from the connectors to the USB, sound, and HDMI ports.
13. Oh, look, there it is - on the BOTTOM of the system board. The memory module slot. Pry open the retaining tabs, and slide the new memory module in at an angle, seating it just right (because once you go back and put everything back in, you're SCREWED if it's not seated right). The tabs should close around the module.
14. Reverse everything you just did, praying that you didn't lose any screws, got everything connected up and RIGHT, and - once you get it booted up - the machine recognizes the memory card.
Ladies and gentlemen of the jury, this is the equivalent of "To remove headlamps, remove engine and front transaxle assembly" for computers.