DVI-I port of the graphics card not working

[Moisey]

Hello!

2 analog monitor VGA available . The need arose to connect both to one computer HP Compaq dc7600 Small Form Factor with the ability to extend the desktop. Graphics card ASUS Radeon HD 6570 PCI-E 2.1 1024Mb 900Mhz 128 bit DVI-I HDMI VGA purchased. Adapter DVI-I VGA purchased .
From the VGA connector of the graphics card the monitor works. The DVI-I graphics card via an adapter that monitor is not working.

Adapter tested. He's serviceable.

Settings the BIOS needs to be changed to solve the problem?

My computer supports digital video transfer via graphics card?

The VGA port works but the DVI-I port does not work. Is this possible?

[erico]

That DVI cable you have is an odd bird. It is DVI-A. 

Your video card is compatible with DVI-D.

That is likely to be why it isn't working.

Purchase a DVI-D cable and try the DVI output from the video card.

Don't forget to ensure that the input of the display you are using is set to Auto or DVI.

Better yet, if your display will accept it, purchase and use an HDMI cable. 

[Moisey]

HI Mr erico.

I apologize for my English.

My video card is compatible with DVI-I: digital video signal plus analog video signal. I hope that not wrong?

The photo is not the DVI cable. This is an adapter DVI-I to VGA. It output an analog signal VGA.

Adapter tested. He's serviceable.

I need to connect 2 analog monitor VGA.

I don't understand: "Don't forget to ensure that the input of the display you are using is set to Auto or DVI." Where to do these settings?

Thank you! Have a good day!

[erico]

OK. I wish you had stated that. NOt all of those adapters work

The subject of the thread is "DVI-I port of the graphics card not working"  That was asked by you and answered. It will work.

There are no changes needed to be made in the BIOS.

Installing two HD6570 cards in your PC is not going to work. There is not enough space nor appropriate slots for them.

Since you have three outputs on the video card, you will need to have displays capable of accepting more than one type of input. 

You will need to use a DVI-I cable or HDMI cable plus a VGA cable to achieve a dual display setup with your PC.

Two analog displays? Do you mean analog monitors?  They are single input types. That is why you are having problems getting this done.

Use LCD displays. They have onscreen menus that allow you to select the input. An analog display does not have that. 

[Moisey]

1. I connect the LCD monitor to the VGA connector. It works.

2. I unplug this LCD monitor from the VGA connector and connect it to the DVI-I via an adapter. It does not work - black screen.

I don't understand why not work. I have no experience. I see 3 reasons:

- the Motherboard does not support DVI-I connector on the video card. (Is it possible?)

- DVI-I connector is faulty. (This is possible when the VGA connector work?)

- The adapter is faulty. (But it's tested and it works).

All these questions will receive a response if DVI-I connector video card to test known-good LCD monitor with DVI-I connector. I do not have this capability.

[erico]

If the LCD display has DVI and VGA ports, then setting the input automatic or DVI  by use of its onscreen menu should do the trick.

Would have helped if you included the brand and model number of the display.

[Moisey]

My LCD monitors have no DVI port! My LCD monitors have only a VGA port! Unfortunately.

Hewlett Packark 20555 SH249. HP Model L1706

[erico]

I have used a gender changer for DVI to VGA before.

I have never used both VGA and output from the VGA side of the gender changer at the same time.

HP sellls an HP DVI to VGA cable, as seen in the following URL, that is supposed to work. 

https://support.hp.com/us-en/product/hp-l1706-17-inch-lcd-monitor/1130367/document/c01518799

Did you try the Windows key + the " P" key to invoke Windows presentation mode?

Just out of curiousity, I must ask if you are not inadvertently using the VGA of the motherboard and the DVI port of the video card.  That combination definitely will not work.

What is the brand and model number of the video card? It should be on the outside of the box it was delivered in.

[Moisey]

Mr. erico, thanks for the useful link! Thank you: "Windows key + the " P" key". It is convenient. I will use (hopefully in the future). 

My computer does not support simultaneous connection to the integrated video card and discrete video card.

But, I heard that it is possible in modern computers. In the BIOS, or UEFI it is necessary to include the multi-display.

My video card ASUS Radeon HD 6570  1024Mb 900Mhz 128 bit DVI HDMI VGA.

She second hand (previously used). I bought it for $ 14. 

So I have a doubt: could it be a faulty DVI connector in normal operation the VGA connector?

[erico]

I just found my DVI to VGA adapter.

It is different than yours.

Mine has all of the pins occupied, unlike yours, which is configured as DVI-A.

The adapter you are using may be the issue.

The following statement you made, "In the BIOS, or UEFI it is necessary to include the multi-display." I have used many different legacy BIOS and UEFI environments. I have never heard of that and discount it. Show me the proof.  

Multi-display environments are controlled by the video graphics software, not the BIOS. It is software.