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M4800 HIGH SIERRA working at 80%

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Hello mates

I'm on my own struggle with my M4800.


- Wifi broadcom

- Battery status

- Nvidia Quadro K1100M (Internal & External DP/HDMI) (Disabled switchable graphics in BIOS)

- Audio (internal & headphones)

- USB 2.0 (ALL PORTS) || USB 3.0 (1 on the right) (Why this happens if all are 3.0?)

- Trackpad (3 fingers movements)

Doesn't work:

- Brightness bar & keysoot

-Very slow boot

Thanks for the help!!


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