A:Answer Thank you for your interest in the LG Monitor. The HP Envy All-in-One computer does not have an HDMI input port. Instead, its HDMI port is only for output, allowing you to use it as a display for another device. Unfortunately, this means you cannot connect your LG 27MQ44B-B monitor to the HP Envy via HDMI. You can download its owner's manual through this link for more information: https://www.lg.com/us/support/product/lg-27MQ44B-B.AUS. If problem persist, please reach out to us on social media @LGUSSupport so we can help you further. ^Cris