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Level 7

Desktop PC won't display on TCL 32S305

My Dell desktop PC only outputs through HDMI but my TCL Roku tv won't display it or even acknowledge that anything is connected. It displays on my Vizio tv fine so I know it's not the PC or the HDMI cable. The Roku tv does display my game console so I know it's also not a damaged HDMI port on the tv. Amy suggestions?

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