Broken GPU -> Removed EFI password -> Black screen
crwdns2934249:0crwdne2934249:0:
Hello community,
I have a ***Late 2011 15” Macbook Pro*** bought in 2012. It had some upgrades done to it over the years and eventually the ***GPU died***. We had it replaced many times but ultimate ***disabled in the firmware***.
Then I somehow forgot the EFI password I set many years ago while reinstalling OSX. They did it in an Apple authorised service.
Now (since the ***firmware had to be reset***) the problem is here again but now there is no display, just a ***black screen***.
The machine chimes, responds to PRAM resets, tried reseting the SMC, takes charge and caps-lock lights up.