Hey man. Just a suggestion (not a critique) but I have been following your posts on the issues with your laptop and thought I would recommend for the amount of time you are putting into it, you may just want to consider buying a new system.
It sounds like budget may be a factor based on some of your posts, but as they say “time is money” and it sounds like you have spent a lot of time trying to get a last dying breath out of the system.
I usually tell customers if they are going to spend more than $100-150 dollars upgrading a laptop they would be better suited just putting that money aside for a new notebook. I got my most recent notebook for $315 brand new.
Otherwise you can always look on Freecycle for a decent hand me down. It may save you the hassle of trying to cobble together a bunch of parts that really weren’t meant to work together. Good luck!