I connected my computer to my 4K tv

Alec_26

Prominent
Jul 26, 2017
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So I connected my computer to my 4K tv and it was running in 2160p. For about 40 min. I have a 4K cable. It is now saying no connection on my tv, like there is nothing plugged into it. But when I change the HDMI port to my non 4K HDMI port it starts working but only in 1080p could anyone help?