I have a 2012 MacBook Pro 13" with a 500 gb SSD
the SSD is about 1 year old and it was performing excellent, but now i dont know
Sometimes when i turn off the Mac and turn it on again im experiencing the Prohibitory sign on boot, i usually wait and sometimes the apple logo reappears or flashes a few times and then prohibitory sign appears again, sometimes i wait a few seconds and then it boots as normal
I have performed a Hardware test and it doesnt show any problem. I have reinstalled the OS a few times, SMART status is OK and i checked the disk with First aid on Disk Utility
Altough it always boots up, the prohibitory sign is making me nervous because im about to sell the MacBook and i dont want anything to spoil my selling, i want to sell an excellent product.
The RAM is also in good shape so it is not that.
I checked SATA cable to see if something was loose, but nothing.
Any other suggestion?
Also, sometimes it stays black after a wake up and i have to power it off and on to be able to use it