Graphics Acceleration

[CairoC]

I have a dell optiplex 790 with high Sierra
-i5 2400
-4GB ddr3 ram
2 500gb hdd

I followed a guide on here and think I installed a kext or something cause it locked my graphics card to a Radeon 5450 3mb

I have tried to use my r9 380 4GB and A gt 710. The 710 works but it’s not using the graphics acceleration and stuck at 1024x768 And it’s under a ati card not even a gt 710 3mb I neeeeed help

 

[UtterDisbelief]

I have a dell optiplex 790 with high Sierra
-i5 2400
-4GB ddr3 ram
2 500gb hdd

I followed a guide on here and think I installed a kext or something cause it locked my graphics card to a Radeon 5450 3mb

I have tried to use my r9 380 4GB and A gt 710. The 710 works but it’s not using the graphics acceleration and stuck at 1024x768 And it’s under a ati card not even a gt 710 3mb I neeeeed help

How do you install High Sierra?

Legacy mode?

 

[CairoC]

How do you install High Sierra?

Legacy mode?

I used a guide on insanely Mac they're fixing it now though