MacBook Pro won’t start past blank white screen
I have a late 2011 MacBook Pro running on high Sierra. I upgraded from 4 to 8GB of RAM back in August. All of that has been working fine.
However, on Christmas Eve, I ran the 10.13.2 security update. When it finished, it displayed a white screen featuring a circle with a line through it. The IT guy at my work reinstalled High Sierra from a flash drive and it corrected the issue. The computer then ran fine for a week.
However, exactly a week after he fixed it, it randomly shut down while in a word document. When I restarted it, the loading bar would get stuck 3/4 of the way, then go to a blank white screen. The IT guy and my friend who is experienced with Mac’s both tried a number of things. Recovery mode cannot be accessed. Resetting PRAM also did nothing. They now both think it’s a hardware issue like hard drive failure.
I took it to the Apple store and a surface level diagnostic test apparently showed the employee that the hard drive seems to be fine, but because my MacBook is now considered “vintage,” the Genius Bar said nothing further could be tested by them. It could still be the hard drive or a cable but we don’t know. No recovery or safe modes are accessible even to them. It’s only a blank white screen.
My IT guy also hooked it up to another monitor and that only showed the white screen as well, so it’s not an issue with the graphics.
Is there anyone here who might know what I should do?
Should I take it to a third party Mac-specific store? They’ll charge me for diagnostics, but I don’t know how else to determine the issue.
Is this a good question?