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My graphics card has malfunctioned and is preventing my MacBook Pro (2011) from booting. Based on my research I will have to otherwise have the logic board replaced. The defective ATI graphics card is preventing my MacBook Pro from booting because it gets stuck on a gray screen sometimes even when using the recovery CD. |
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The line between repairing a circuit with a bad card that is drawing down voltage, or killing a communications bus or overheating and just surgically disabling the component that is soldered to the whole is non-existant. You'll need to swap the board or start destroying things and hope that you guess well and don't do more damage than good when you are disconnecting traces on the logic board. If you had specific diagnostic information as to the precise failure, then perhaps there would be something to do, but as written, there's no cause for hope that you can extend the life of this computer. |
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I faced the same problem with my late 2011 MacBook Pro 15". After checking several possibilities (bad RAM, firmware, corrupt OS, etc) I ended up concluding that I have a malfunctioning discrete video card (AMD Radeon HD 6750M). The integrated card (Intel HD Graphics 3000) seems to be okay. After the boot process is concluded, it is possible to force the use of the integrated card using the software gfxCardStatus (http://gfx.io/). However, I could not find a way to force the use of the integrated video card during the boot process. I managed to find that the boot process can be finished after leaving the blank screen on for about 15 or even 30 minutes, powering the computer off, and turning it on again. I am still learning about the problem... Anyway, it seems to be possible to replace the discrete video card without replacing the logic board. Good luck, Hani |
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