3 MacBook Pro late 2011, suddenly doesn’t boot.
MacBook Pro late 2011, suddenly doesn’t boot.
Problem is:
When I press power button I hear usual starting clicking noise and the sleep light lit for 1 second, and the screen stay blank.
What I did…
Remove second bank of RAM, Exchange Ram Stick, and Replace RAM.
Remove Hard Disk (SSD)
Remove all external wire connection to computer (USB, LAN, Charger …)
Clean with compress air CPU Fans (Was clean)
(Battery is fully charged)
There is one time the screen Password Reset Screen appears, in upper left menu, I choose to reboot.
Thanks for your help and advise.
Is this a good question?
Score
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971 
What happened before it stopped working? Does the system make any sound?
What does the onboard battery tester show 4 LED's or better and all steady or are they blinking?
by Dan
When I press power button I hear starting clicking noise and the sleep light lit for 1 second, and the screen stay blank.
(Battery is fully charged 8 LED steady)
by Ticla
Did you have a liquid spill at some point?
by Dan
No Dan, apparently there is no reasons was working fine all over these years could be the motherboard failure ??
by Ticla
While I didn't want this either, it was a lot better than what I feared.
Sorry, the 2011 systems have a known issue with the GPU chip.
by Dan