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Versión actual por: Dan ,

Texto:

-"1) After your Mac is shut down and plugged in, unplug any external devices — like external hard drives, flash drives, or printers.
-
-2) Press (left side): Shift-Control-Option keys and the power button at the same time, briefly, then let go.
-
-3) The computer should remain off for this reset, though you may notice the LED on the charger change colors.
-
+# After your Mac is shut down and plugged in, unplug any external devices — like external hard drives, flash drives, or printers.
+# Press (left side): Shift-Control-Option keys and the power button at the same time, briefly, then let go.
+# The computer should remain off for this reset, though you may notice the LED on the charger change colors.
Then go right into a PRAM reset:
-1) While the computer is still OFF, locate the “Command + Option + P + R” keys.
-
-2) Turn on the computer and immediately hold down these keys until you hear the startup chime twice, then let go.
-
-3) Let the computer start up as it normally would (You should see your screen by now if this fixed the issue)."
-
+# While the computer is still OFF, locate the “Command + Option + P + R” keys.
+# Turn on the computer and immediately hold down these keys until you hear the startup chime twice, then let go.
+# Let the computer start up as it normally would (You should see your screen by now if this fixed the issue)."
Sometimes this works for me, sometimes it doesn't. I've given up on the black screen and shut it, unplugged it, and driven home with it in the car only to find a normal screen when I arrive home. Techtool only shows the onboard Intel graphics.
Sounds like the NVIDIA GPU is coming unseated.
Unfortunately there is no Apple Store/Genius bar nearby.
If this is a software issue I hope somebody comes up with a permanent fix...

Estatus:

open

Aporte original por: Joe Libby ,

Texto:

"1) After your Mac is shut down and plugged in, unplug any external devices — like external hard drives, flash drives, or printers.

2) Press (left side): Shift-Control-Option keys and the power button at the same time, briefly, then let go.

3) The computer should remain off for this reset, though you may notice the LED on the charger change colors.

Then go right into a PRAM reset:

1) While the computer is still OFF, locate the “Command + Option + P + R” keys.

2) Turn on the computer and immediately hold down these keys until you hear the startup chime twice, then let go.

3) Let the computer start up as it normally would (You should see your screen by now if this fixed the issue)."

Sometimes this works for me, sometimes it doesn't. I've given up on the black screen and shut it, unplugged it, and driven home with it in the car only to find a normal screen when I arrive home. Techtool only shows the onboard Intel graphics.

Sounds like the NVIDIA GPU is coming unseated.

Unfortunately there is no Apple Store/Genius bar nearby.

If this is a software issue I hope somebody comes up with a permanent fix...

Estatus:

open