Thanks to Rehabman,yosemite installed,but ALC292 card is not working.THKS

[RehabMan]

Just Another Question Mr. Rehabman, How do I disable the AMD Firepro m6100 entirely upon booting? so that it will only use the Intel HD 4600 for QE/CI. like the amd doesnt even exist. This is to avoid any errors in the future. Thanks

Your BIOS probably has an option, but of course that would disable it in Windows too.

For disabling only in OS X...

http://www.tonymacx86.com/yosemite-...bling-discrete-graphics-dual-gpu-laptops.html

 

[humpydumpysat]

Alright bro ill check it out now to do it, dang you're all over the internet even on different websites. I do not know why you're doing this but you're making a difference. Thanks for your help.