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Helpful answers
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Oct 4, 2015 4:05 PM in response to JeffreyJ1234by BobHarris,Try Resetting the PRAM
OS X Yosemite: Reset your computer’s PRAM
Try Resetting the SMC
Resetting the System Management Controller (SMC) on your Mac - Apple Support
Try Booting holding the Option key. Maybe you will be given the option to boot OS X.
Try booting into the Recovery Partition (holding Command-R) -
Oct 4, 2015 4:38 PM in response to JeffreyJ1234by leroydouglas,★Helpfulshine a flashlight through the Apple logo and can you see the login screen?
This might indicate a LVDS cable end that plugs into the Logic board.
You can take it in for a free 'Apple Service Diagnostics' test
Genius reservation http://www.apple.com/retail/geniusbar/
on-line https://getsupport.apple.com/GetproductgroupList.action
check warranty https://selfsolve.apple.com/agreementWarrantyDynamic.do
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Oct 4, 2015 4:38 PM in response to leroydouglasby JeffreyJ1234,oh my god the flashlight thing worked. thank you SO much
I don't know how you figured that out but you are a genius