did you try plugging in the "suspected dead" micron while on your "new and working" SSD?
check if you can access the micron SSD fine through windows. (copy/paste/delete files on it)
you can also...

What state is your laptop on when the touchpad issue occurred? This happens on my fujitsu laptop when charger is plugged in. After a quick googling, found out that I just had to put the "brick" part...