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<< Solved >> Second HDMI monitor doesn't work - High Sierra

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Dec 25, 2018
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Motherboard
MSI Z170A Gaming M9 ACK
CPU
Skylake i7-6700K
Graphics
MSI GTX 1080 + Dell 24" + BENQ 23"
My both monitors used to work ok since Mac OS installation. My Dell was plugged into HDMI port and my Benq was plugged into DVI port of the video card, everything worked like a charm. However, something went wrong after I messed with BIOS settings (Windows 7 mode/Windows 10 WHQL mode - which is MSI CSM basically) and my monitor plugged into HDMI port doesn't work in MacOS anymore and it is not detected in the system. Reverting BIOS settings, clearing CMOS, updating Clover - nothing seems to work. Can anybody show me the right path to troubleshoot this? Thanks!
 
Issue solved, BIOS reflash did the trick.
 
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