Solved! Displayport audio just stopped working? :(

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Jun 17, 2017
I purchased a Lenovo Thinkcentre SFF M90 3245 i3 3.2Ghz 4G 250G DVDRW Windows 10 Professional, to use a media centre for my tv, I am using a brand new Displayport to hdmi cord. It all worked perfectly till last night the audio stop coming through. I always try and find a way to fix it, because I hate asking for help, but now I dont know what else to do. I have try many way to fix it and no luck. I have restarted audio service and endpoint thing, unplug replug from tv and pc and tried other ports on tv. restarted pc, I dont know what else to do. Yes I did make sure that the tv was selected under playback devices. Any help will be great, if you need more info let me know.
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