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Please try installing the latest graphics driver for this unit from the following website:
Do you have the option to use straight connection instead of an adapter?
I can see from the HP website they use the HP DisplayPort to HDMI 1.4 Adapter as you can see at:
Is yours DisplayPort to HDMI 1.4 or 1.2 or something else?
Thanks Ivanu, it seemed to do the trick. Thank you.
I’m glad to hear that your issue has been resolve and thank you for letting me know.
I would like to ask you, was the issue resolved because you install the driver, use straight connection or the HP adapter?
I actually called HP and they sent over a technician who told me he just updated the driver.
Thanks again for your help.
You’re very welcome!