I installed macOS Ventura on a working 15 inch 2011 MacBook pro. During the install there were multiple times where the laptop would fail to restart, and boot to a black screen. Its now persisting to the rest of the laptop, where it either fails to shutdown, fails to restart, or fails to POST, and gets stuck at a black screen. Any idea what kind of fault this is? I don't think it's the gpu, since it ran fine with switching graphics disabled.
Thanks!
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