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Black screen problem after install

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Hello all,


I installed yosemite by niresh guide. My computer stucked at black screen. I used grafix

and backup all kext files. I rebooted my laptop with -x but stucked at the black screen again.

I can use -s and -v but -x does not effect. How can i solve the problem? My conf :




My laptop is : Toshiba L855-14N


Please advice.

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use cpus=1 and graphicsenabler=yes or no and if still no luck then use nv_disable=1, I had black screen issue during the install and cpus=1 and nv_disable=1 solved the problem

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