Yup this is why asked for model number This all in one computer can be used as a monitor but no good for media consumption Only as a monitor : Not as a TV. You will not get any sound from internal speakers of your computer  and you will  have to use a Bluetooth headset paired with fire stick    Plug in Firestick power it on (using remote)  Use the super tiny button on the bottom of the display which lets you select different source options.    
Hello I bought Fire TV stick and plugged it in to the PC through HDMI because Fire TV connects through HDMI but nothing pops up, no setting nothing on the display regarding Fire TV I just see my normal desktop and there are no options to start it on the bottom right corner of the taskbar (normally when connecting something through USB it shows up on the taskbar) nothing in This PC setting as well I only see my C: drive.    How does one open something on HDMI?
FireTV stick doesn't work through HDMI port