Here's how to reset to factory defaults: http://www.samsung.com/us/support/SupportOwnersFAQPopup.do?faq_id=FAQ00001316&fm_seq=1484
Although I'll admit this sounds similar to what you've already done. So let me either way what the result is.
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Brian Cooley found it for you at CES 2017 in Las Vegas and the North American International Auto Show in Detroit.