Black bar flickering top left corner

[jules123333]

Hi, this is not the first time im building a hackintosh, but it is the first time witch Sierra.
i have this weird flickering black bar on the top left corner of the screen. anyone suggestions?

my specs:
gigabyte h110-k d3
intel i3 6100
intel hd 530(im using integrated because with the gtx 950 I don't get if fully functional)
gtx 950

sorry for my bad English

 

[BreBo]

@jules123333, please update your profile (personal details) with your build (Motherboard, CPU and Graphics Card).

Profiles need to contain at least your primary system to assist others with helping you.

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