Edit: Sorry I replied for a different PC, not the 7700.

hello you do to push button at left of the button on/off, this button is hidden it change connect pc dell or connect hdmi it is at one inch at left , salut !

I am having issues in trying to use the HDMI input feed on the AIO Inspiron 7720 as an extended monitor to both MAC & Laptop.

The Inspiron 7720 will switch to take the feed from the HDMI input when the button next to the on/off button is pressed, however, the Inspiron 7720 will switch back to desktop display. 
This very often happens when the wireless mouse connected to Inspiron 7720 is moved or button selected etc and also just randomly.

I bought the Inspiron 7720 in 2023 but only recently unboxed so not really used much. This issue has been there since unboxing.


Would be interested to see if anyone else is having the similar issues ?

@Pankaj81 - Please don't double-post the same issue...

@RoHe apologies for the double post.

After responding against this thread, i thought it might be better to maybe start a new thread hence the duplicate. 

Still point taken. Trying out your suggestion of using UB mouse instead of wireless.