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Nuiiz Thanachart

Yosemite is Boot finish but blackscreen

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after the hackintosh zone logo with the loading bar my monitor shows "no signal" message and everything goes black. but when I press some of the key there's have a sound responded... 

sometime I can boot as normal, sometime its goes like I said. I've tried  nv_disable=1 its works but very bad graphic. and i've tried -v its also works like normally boot but I'm not sure this will always work.


any thought or solutions? 


Intel I7 2600k

8GB DDR3 (2*4)

Asus P8Z77-V

Asus Geforce GTX 590



ps1. everything works fine when I was used Maverick.

ps2. Is there anyway to set clover countdown and boot like Maverick version?

ps3. sorry for my english, its wasn't my main language.


Thanks for help.

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Black screen after boot gone on Yosemite 10.10.1

I changed multibeast system definitions mac pro 6.1 to mac pro 5,1 and it worked!


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