Mac book pro

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Help. MacBook Pro keeps cycling when I turn on. I think I causes by force turning it off a few nights ago when it was starting up. I've tried option/command P and R after turning on and before grey screen or apple appears and waiting thru 3 chimes. Still cycling. Any advice?
 

pigoo3

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Your Mac's Specs
2017 15" MBP, 16gig ram, 1TB SSD, OS 10.15
What do you mean by "cycling"?

- Nick
 

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