How to check if Display Port is working

[Blttrt]

How do you setup the display port.  This PC has one HDMI & one Display port.  I have to monitors one LG & one Samsung.  Both work on HDMI but can't get either one to work on display port I have a 4K Ultra HD display cable.

[Hawks_Eye]

Hi @Blttrt 

Welcome to the HP Support Community! We're here to help you get back up and running.

To help you set up the DisplayPort (DP) connection properly and confirm whether your PC supports multiple monitors through both HDMI and DisplayPort, I’ll need to check a few important details first.

Please share the following information:

Exact model number of your PC or desktop tower
(e.g., HP EliteDesk 800 G6, Pavilion x360, etc. — you can find this on a label on the back, bottom, or under "Settings > System > About")

Is the DisplayPort on a graphics card or on the motherboard (integrated)?

If it’s on a vertical slot near other ports (HDMI, USB), it’s likely integrated.

If it's lower down on a horizontal slot, it’s likely from a dedicated graphics card (which may require drivers or specific settings).

Are you using a DisplayPort to DisplayPort cable, or an adapter (e.g., DP to HDMI)?

Have you tried switching the monitor input source to DisplayPort manually?
Some monitors don’t automatically detect a new input.

What happens when you connect the monitor to the DisplayPort?

No signal detected?

Flickering screen?

Black screen?

Monitor not detected in display settings?

Once I have this info, I’ll help you:

Confirm if your system supports dual display via HDMI and DisplayPort

Check if the DisplayPort needs activation or driver updates

Guide you through connecting both monitors correctly

Let me know the answers, and we’ll get it working step by step.

We're looking forward to helping you get back up and running! 

Regards, 

Hawks_Eye

Note: Do not share any of your personal information in public, such as serial number, phone number, email ID, etc.