Multiple display help

[Ang12]

I would like to attach an extra display but unsure what ports I can do this with? The ports I have on my PC is as follows:

USB and HDMI out.

[Prométhée]

Hello
if you have an hdmi out port, you can use a screen with hdmi input!
the options via usb, are quite random, often it does not work

[Ang12]

Thanks for the response, I have connected the monitor using the HDMI but the computer isnt picking up an additional screen. Even if I ask for it to "Detect" one. 

[Prométhée]

So you already have the screen.
it is necessary to give more precision otherwise ...
exact model of the computer and screen, type of cable used (if you know)

To find it follow this
for a desktop computer

HP Desktop PCs - How Do I Find My Model Number or Product Number? | HP® Customer Support

and for a laptop:

HP Notebook PCs - How Do I Find My Product Name or Number? | HP® Customer Support

[Ang12]

Sorry yes, additional details as follows:

The additional monitor is a HP monitor E233, i have connected using a HDMI into my All in one desktop - to Displayport in the monitor.  

My desktop is the 

HP All-in-One - 22-c0023na

[Ang12]

The All in one computer is 

HP All-in-One - 22-c0023na

[banhien]

@Ang12 

Its specs

          https://support.hp.com/in-en/document/c06103080

It has HDMI out at its back, you can use it to connect to an external monitor.

port # 7 above

Regards.

[Prométhée · Accepted solution]

hi

thx @banhien 

"HP monitor E233, i have connected using a HDMI into my All in one desktop - to Displayport in the monitor.  "

in this case you probably have a problem with the adapter, which does not good one !
I don't know if this would be ok for you, but see this, it might help you

https://h30434.www3.hp.com/t5/Desktop-Knowledge-Base/Connect-two-HDMI-monitors-with-a-graphics-card-...

[edit]

https://support.hp.com/us-en/product/hp-elitedisplay-e233-23-inch-monitor/17210309/document/c0562828...

you confirm it is this or not, because it says (1) HDMI 1.4, why not use hdmi only?

[Ang12]

I checked the monitor and this works on an alternative computer. 

I was advised to check the HDMI port was working. I was told to look in Device manager - Display adapters and check that the HDMI is listed. The only thing listed is the Graphics card.

Does this mean that there is a fault with the HDMI?

[Prométhée]

https://www.intel.com/content/www/us/en/support/articles/000005485/graphics.html

i don't know who told you this, but i don't see where you can find hdmi in device manager ..
All one can possibly have is intel high definition audio, something like that, which is the audio driver, if connected in hdmi
But does that not answer the questions?