Logically speaking, if you have two graphics card on your Mac, can’t you just use the one that’s working? The loaded high-end models will typically have both. The cheaper models contain these integrated GPU’s because they use less power than the discrete, power-hungry video chips. Some MacBooks like the MacBook Air and the MacBook Pro with and without the Touch Bar all come with integrated graphics, or built-in graphics where they are embedded into the logic board. Technically speaking, a GPU is a graphics processing unit. You do have a MacBook logic board that needs repair, but 90% of the time, that means that specifically your GPU has failed and you either can’t power up your Macbook or there’s no video output. Many times, Apple will say you have a failed logic board. The dreaded GPU failure on a MacBook is common.
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