Problem with Shutdown progress and VGA port.

Hello everyone, i'm a new Hackintosh user, i have finished install macOS sierra 10.12 one day ago. It worked perfectly except shutdown progress and my GTX 650. First problem, it happended to all of my OS, windows 10 and macOS, when i click shutdown, it show that shutting down and fade to black screen then it automatically reboot, i don't know how to fix it. Second problem, i known that macOS didn't support VGA Port, but my screen is old and don't have DVI or HDMI port, my idea is buy a VGA to DVI connector to solved this problem, i don't know it can be worked or not. Thanks a lot.

submitted by /u/su1999
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