MacBook Pro freezing with flickering screen
Hi there, I'm having issues with my MacBook Pro, random, unrecoverable freezing. Hardware diagnostics show no issues, software is fully up to date. I've tried a complete reinstall of OS-X, I even tested different memory cards which all are working perfectly, I handle my computer with all care.
Symptoms: From behave normally, out of nothing the screen suddenly starts flickering very rapidly.
The computer also freezes completely - except that the pointer will still move.
The computer does not react to anything I do except to move the pointer. The pointer moves much faster than usual, yet I cannot click on anything.
Sometime this flickering starts in the middle of the display and the other half turns into grey or pixelated distortion of the screen.
Sometimes, if I wait long enough, the screen will stop flickering, and sometimes the pointer speed will return to normal. But the computer never unfreezes.
The system is essentially becomes unresponsive, requiring me to hold down power button and reboot.
I've brought it to the Apple store and they've already replaced the Logic-board (twice) thinking that it was a Nvidia issue, but the problem still happens, also they performed a full hardware test and the computer is in good shape, passed all the tests and didn't reported any error, I've performed the 'repair permissions', etc.
I've noticed this behaviour after some Apple Update, but I couldn't say which one for sure because I always trust Apple updates and I didn't thought I would have any issues with any of them.
I've searched in other similar threads but either they are unanswered or apparently they fixed the problem replacing the Logic-board (which in some cases they had to reopen the thread because their computers started freezing again).
I use also a 30in Cinema Display most the time except when I travel, the specs of the Display card are the following:
NVIDIA GeForce 8600M GT:
Chipset Model: GeForce 8600M GT
Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 256 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0407
Revision ID: 0x00a1
ROM Revision: 3212
Displays:
Color LCD:
Resolution: 1440 x 900
Pixel Depth: 32-Bit Color (ARGB8888)
Mirror: Off
Online: Yes
Built-In: Yes
Cinema HD:
Resolution: 2560 x 1600
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Any suggestion? 😟
Symptoms: From behave normally, out of nothing the screen suddenly starts flickering very rapidly.
The computer also freezes completely - except that the pointer will still move.
The computer does not react to anything I do except to move the pointer. The pointer moves much faster than usual, yet I cannot click on anything.
Sometime this flickering starts in the middle of the display and the other half turns into grey or pixelated distortion of the screen.
Sometimes, if I wait long enough, the screen will stop flickering, and sometimes the pointer speed will return to normal. But the computer never unfreezes.
The system is essentially becomes unresponsive, requiring me to hold down power button and reboot.
I've brought it to the Apple store and they've already replaced the Logic-board (twice) thinking that it was a Nvidia issue, but the problem still happens, also they performed a full hardware test and the computer is in good shape, passed all the tests and didn't reported any error, I've performed the 'repair permissions', etc.
I've noticed this behaviour after some Apple Update, but I couldn't say which one for sure because I always trust Apple updates and I didn't thought I would have any issues with any of them.
I've searched in other similar threads but either they are unanswered or apparently they fixed the problem replacing the Logic-board (which in some cases they had to reopen the thread because their computers started freezing again).
I use also a 30in Cinema Display most the time except when I travel, the specs of the Display card are the following:
NVIDIA GeForce 8600M GT:
Chipset Model: GeForce 8600M GT
Type: GPU
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 256 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0407
Revision ID: 0x00a1
ROM Revision: 3212
Displays:
Color LCD:
Resolution: 1440 x 900
Pixel Depth: 32-Bit Color (ARGB8888)
Mirror: Off
Online: Yes
Built-In: Yes
Cinema HD:
Resolution: 2560 x 1600
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Any suggestion? 😟
MacBook Pro 15', Mac OS X (10.6.6), 6 MB RAM
