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The problem could be in the adapter to the video card. There are different types of DVI connections. If the adapter does not have the proper set of pins then the card will not recognize that a monitor is connected at that port. Monitors themselves have no bearing on whether a single or dual monitor set up will work or not. Digital Visual Interface Follow this link, it may help you determine if the adapter you are using is correct for the graphics card.
How long have you waited for it to boot? I know some servers take forever before they send a signal to the monitor. However, if you're get the monitor test screen or "no signal" screen, this usually is a sign that the monitor is not getting any signal from the server, indicating a bad cable or loose connection or the like (though not always if it's still booting). Have you looked in the server cabinet to make sure nothing is broke on the on-board connection or something? Is the DVI port you mentioned on the external PCI card? What does it plug into? I'm guessing you've checked for any installed video cards. Is there another port on the front or anything under a panel?
This is likely a result of the computer not recognizing the monitor. During the POST test during startup,the computer will check for a video output. It can range from the video card failing to just not having the monitor plugged in. I would check you connections, perhaps try a different monitor, even a television that has either HDMI, DVI, or VGA input. If that does not fix it, it is likely your graphics card or on board graphics from the motherboard.
Is there anything new since the last time the computer worked? How old is your PC?
you need a dvi to vga adapter not a dvi to vga plug and you must also go into your graphics card setup catalyst control center if its ATI Nvidia Display manager for Nvidia if you boot the computer with it pluged in and you can see the boot screen on bolth displays then its an os thing just right click and select the display manager the activate all display's through the managers
This is normal. Your monitor has a VGA hook in for regular definition. What it is doing, the monitor always by default looks for the VGA hook first. On my desktop it does the same thing until it finds a signal on the DVI.
Thank you for providing your configuration details.
You have failed to specify wheather or not your LCD Display is under Warrenty.
Perhaps these simple trouble shooting procedures will get the job done.
1. use the DVI to VGA adaptor that came with your card
Plug in a regular CRT monitor to the Primary Display Output Port using the DVI to VGA adaptor
( either port can be designated as the primary by you )
I like to use the Port nearest to the motherboard as the Primary
2. plug in the your LCD monitor on Secondary Display port using your DVI cable
At this point you should be able to see your desktop on the Primary CRT Display
3. Go to the display properties and use the Nvidia Dual Display Setup Wizard
set both desktops to CLONED at a resolution of 1024x768 and set the refresh to 60Hz
which is default for most LCD displays , some have higher refresh rates , consult your user manuel
If the display resolution and refresh are set incorrectly for your CRT or LCD you will see
Signal Out of Range ( if the display has the ability to display that error message )
At this stage both displays should be showing a Windows Desktop
If you now see your desktop on both displays , you can now put the LCD on the Primary Port
No Signal Detected ( this means the display device is not receiving a signal )
If your LCD display is still displaying the error message
"No Signal Detected" after performing the trouble shooting proceedures
You may need to read the user manuel about how to enable DVI signal input.
If you are certan you have done everything correctly but still see only "No Signal Detected"
I have no experience with the DVI links because such technology is still unavailable here in Argentina. We have DVI video cards but finding a suitable DVI monitor is another (long) story. I think that your card (that has 2 DVI ports) is initializing one port first (the primary one) and then, when windows starts, it initializes the other and outputs video from both ports. Try connecting the monitor in the other DVI port. If your card has a VGA output, the VGA gets initialized first.