Display not showing on Aspire AZ1-621G-UW11 after using HDMI input

NeedHelp69
NeedHelp69 Member Posts: 1 New User
Hi, I need help wit my Aspire AZ1-621G-UW11 all in one desktop. One of the intended feature is to use the HDMI port to allow the use of game consoles to display gameplay and my brother did that for the first time and it worked but now it won't switch back the PC display and I can't access anything now.

As it stands, it's just a monitor and not a computer anymore.

Any advice/solutions?