My hardware:
Msi gaming 5
I7 4790k
16 gb
250 gb samsung ssd
Nvidia geforce 760 gtx
I have no problem with OS X Mavericks, Yosemite, El Capitan and Sierra. Only this last 2 a3 weeks i have problem with Sierra USB Installer to get on setup. Before i had no problem wih Sierra. I have try a lot of thing:
Download Sierra from appstore ( latest version)
Created usb from OS X mavericks and El capitan with unibeast
Bios setup to default and disabled CFG lock and vt-d. And also with com port disabled.
Bios firmware updated to latest
Without gtx 760 card only onboard.
I have only problem with Sierra. As i say about 2 a 3 weeks before it worked without any problem now it stpped as on the pictore on my post