my Mac doesn't turn on it displays a black screen with a few horizontal white bars
What could be wrong?
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What could be wrong?
Difficult to say but it sounds like a failed GPU. Try resetting the NVRAM and if that does not take care of it then take it to your local AASP to be worked on.
Direction to NVRAM reset are in https://support.apple.com/en-us/HT204063
Difficult to say but it sounds like a failed GPU. Try resetting the NVRAM and if that does not take care of it then take it to your local AASP to be worked on.
Direction to NVRAM reset are in https://support.apple.com/en-us/HT204063
my Mac doesn't turn on it displays a black screen with a few horizontal white bars