I want to use the all-in-one as an external monitor for a laptop

Hello-

I have an Acer Inspire 5600 U, and I'd like to use it as an external monitor when I'm working at home with my work laptop. I have the laptop connected into the HDMI IN slot of the Acer machine. My laptop seems to recognize the Acer as a secondary monitor, but I can't figure out how to get the image to show on the Acer. When I go through the monitor menu (button on the right-hand side), I see an option for HDMI In but it's grayed out.

Do I need to load drivers onto the laptop? What do I need to do on the Acer machine to get it to recognize the HDMI IN connection?

Thanks for any suggestions-

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carrisima

Solved my own problem, I had a series of HDMI cables that just didn't cut it. Finally invested in a high quality one at Target and it works like a charm.