Hi,

Looking for hopefully an easy solution. We purchased 10 x Optiplex 7770's for the business just before xmas. We have various other models around the business working as they should. It will be used as a desktop during most times but we also need the requirement to use it as an external monitor.

The manual, blurb online all states that it has a HDMI Input. Got the machiens and it certainly does, now we can't actually get it to act as an external montior? We have tried with varioues cables, windows laptops. macs, docks. You name it we've tried it. The laptops pick up that it has something connected and labels it correct as an "Optiplex 7770" however doesn't actually display anything. Tried extended, tried mirrored etc on 10+ different machines.

 

Run Dell Command Update and updated everything, tried our build and a vanilla build and still nothing? We are using the Input Selection/LCD Test button on the bottom panel. The button does nothing unless you hold it in for a few seconds then the screen goes black with a backlight. We have tried it with the AIO booted and logged in, not booted etc etc but nothing seems to ever output?

 

Are we missing a trick? Any advice would be hugely appreciated.

 

Thanks