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Q: Imac shuts down during start up, then restarts itself and shuts down.....

I have a 2011 imac 27 inch 3.4ghz, i7 quad core. It JUST turned it on, got vertical red lines on the screen, it got partway through start up, shut itself down, restarted with the same results, shut itself down and just keeps doing that. Any ideas?

Thanks

iMac, el Capitan os

Posted on Oct 26, 2015 2:12 PM

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Q: Imac shuts down during start up, then restarts itself and shuts down.....

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