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If you don't have a couple of extra hdmi cables, check with a friend or coworker to borrow a couple and see if that clears the issue (which would indicate new cables are needed due to a potential short in the cable or cables).
Sorry, there was a problem. Please try again later.We would recommend trying a different HDMI cable as this is the easiest way to rule out one possible cause. If another known working HDMI cable does not resolve the issue, please contact Acer support for further assistance. Contact info is posted here: https://www.acer.com/ac/en/US/content/service-contact
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