My macbook pro starts to become unpredictable at first, sometimes very slow, unusable and sometimes it starts to work normally.
I tried first aid from the SSD but nothing bad.
After a few days, I started getting the folder sign with a question mark, not always.
After a few more days, I received a forbidden sign, but the forbidden sign is not consistent on the screen, after 8-9 seconds, I see the Apple logo for the second sign at again prohibited for 8-9. And repeat.
Could this be related to the cable connecting the SSD or the SSD itself.
When trying to reinstall OS X, the installer did not find any drives either.