Monitor screen not connecting even after pressing "detect"

[Zackattack]

Earlier this week, I decided that I wanted to get a second screen, because while downloading files the one screen I used was getting messy, and I could use a second screen for organization. Using an adapter and a spare monitor I had, (Monitor was made by Sansui) I got it all plugged it securely, however, when I press "detect", the monitor is not detected, and an error message come up that says, "Didn't detect another display". My second monitor has 5 different input modes;  TV, Component, Video, HDMI, and PC, and none have worked out. Is there something I'm doing wrong, or is there something wrong with the monitor. (Also, the second monitor is the same as the monitor in use right now)

[Echo_Lake]

@Zackattack

Thank you for posting on HP Support Community.
 

Don't worry as I'll be glad to help, I have a few troubleshooting steps we could try to fix the issue:  

Have you tried connecting this Monitor to another Notebook or computer to rule out any issues with the HDMI-DVI connector?
 

I suggest you update the Graphics driver from Device Manager

• - In Windows, search for and open Device Manager.
• - In the list of devices, look for a Graphics driver and expand the list
• - Right-click the driver and select Update Driver Software.
• - Click Search automatically for updated driver software.
• - Follow the on-screen instructions to install the updated driver.
• - Restart your computer to complete the installation of the updates.

Then update the BIOS from this Link: http://hp.care/2G3PCEu

Also, ensure that your Windows OS is up to date

Start  button, and then go to Settings  > Update & security  > Windows Update, and select Check for updates. If Windows Update says your device is up to date, you have all the currently available updates.

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

[Zackattack]

Hi, Echo_Lake, 

I do not quite understand, I went to windows and was able to go to device manager, however, there was no list labeled, "graphics driver".  Also I don't know if you noticed, but I believe I did state that this is a desktop, not a notebook or a laptop. I appreciate your help, but I don't think this is what I'm looking for.

-Thanks, Zackattack

[Echo_Lake]

@Zackattack

Thank you for posting back.

Let's try this: 

• Step 1: Connect the second monitor
• Step 2: Configure the monitor
• Step 3: Enhance and personalize your monitors (optional)
• Click here: https://support.hp.com/in-en/product/hp-18-5000-all-in-one-desktop-pc-series/6528363/document/c04641... to complete the troubleshooting steps. 

Hope this helps! Keep me posted for further assistance.