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Purchased a wide panel LCD and thought it would be a no-brainer swap of cables to go digital as both systems have DVI/DB15 VGA cards.
System A/W98SE booted up in DVI/digital.
System B/W2K did not recognize DVI at boot time.The mobos are identical configuration Asus A7N8X-Es.
System A is working correctly, and does the following:
- DVI cable: Digital display
- DB15 cable: Analog display
- DVI and DB15 cables: Analog display no matter what the LCD panel settingSystem B has a Radeon 7000/VE installed.
System A has an nVidia FX5200 so borrowed an FX5200 which installed successfully under analog. Booted up with DVI cable but the display was blank, connect DB15 (no boot) and analog screen is fine.
Swapped disks to system A/W2K and system B/W98SE, no change.
System A runs DVI, System B is analog-only. My intention is to share both systems on a KVM instead of walking across the room to the other desk so I have to get both running on DVI (the LCD is way sharper in DVI than analog).
- Is it solely the VGA card, or are there other factors in the sequence that triggers DVI recognition?
- Does anybody know how to force DVI recognition?
Thanks

> Are you using BOTH cables at once?
Of course not.
I explained in the note what happens with the three cable combinations on the working FX5200.

And if your explanation was clearer I wouldn't have asked. "System A is working correctly, and does the following:
- DVI cable: Digital display
- DB15 cable: Analog display"

Let's not get hissy here, there are two systems seemingly identical and System A works with DVI.
System B doesn't work, and my request for help is with what might help figure out why System B does not recognize DVI and if there is anything that can be done.

"System B has a Radeon 7000/VE installed."
That card cannot recognize a DVI monitor. It was made before cards with DVI outputs existed, and a DVI to VGA adapter or cable will not work.

>> "System B has a Radeon 7000/VE installed."
> That card cannot recognize a DVI monitor.
> It was made before cards with DVI outputs
> existed, and a DVI to VGA adapter or cable
> will not work.You had me going there, but could not imagine ATI shipping a card with a DVI connector before DVI outputs were around. There are references on the web of DVI Radeon 7000 cards at tinyurl.com/22g5gb (and tinyurl.com/2bs9x2
"Multiple Display configuration with CRT/DVI/TV support."
"HydraVision Multiple Monitor Management Software gives you flexible multi-display support to enable many combinations of VGA, DVI and TV"

I suppose what I should have said is when Radeon 7000 cards first came out in about 2000 and for some time after that (till late 2001?) they could not support DVI monitors.
Does your 7000 VE have a DVI port? If it doesn't the necessary circuitry is not there on the card for a VGA to DVI adapter or cable to work.If it does have a DVI port....
I have a Power Color Radeon 7000 made in Jan. 2002 with the Radeon 7000 VE chip, VGA and composite TV outputs. Some alternate models had DVI out, or both VGA and DVI out.
In it's manual:
Default display is at a 60HZ vertical refresh rate - the monitor must be capable of a 60HZ display.
(for the first part of the boot)Asus A7N8X-E manual
"Install only 1.5v AGP cards on this motherboard. 3.3v AGP cards are not supported on this motherboard."
1.5v - 4X, 8X ; 3.3v - 1X, 2X ; a Radeon 7000 card is often (1X/)2X/4X when you look at it's detailed specs.
Some mboards with 4X or 4X/8X AGP slots cannot use any card with (1X/)2X/4X or (1X/)2X/4X/8X support, and in some cases using such a card will eventually damage the AGP circuits, the AGP slot, and the card, but the Asus manual doesn't specifically say that, so you PROBABLY, but NOT CERTAINLY, can use a Radeon 7000 card in it no problem.In your bios Setup
Advanced Chipset FeaturesAGP Frequency - Auto (default) or 50 - 100mhz in steps
If that is not set to default, it may be set to a frequency the monitor cannot support.
(solution: remove mboard battery or clear the cmos to restore the default setting)
AGP 8X Support - Enabled (default)
Might need to set that to disabled, but it's doubtful it would matter; the bios should ignore that if the card doesn't support it. If it DOES matter, you would have to temporarily attach a video card that does work, and change that setting to Disabled.
Graphics Aperture Size - 64mb (default)
32, 64, 128, 256, 512mb available.
Make sure the graphics aperature size in the bios is not set to a size not supported by the card. Radeon 7000 cards I've seen can have either 32mb or 64mb of video ram - the card may not work if it has 32mb and the aperture is set to 64mb.
Solution: if it's already set wrong - install a card that does work, and set the aperture to 64mb, or to 32mb if applicable.Integrated Peripherals
Primary VGA bios - PCI VGA card (default)- should be changed to AGP VGA Card.
For Win 9x, probably ME, I know from experience you will get a normal display in the first part of the boot, but you will get NO DISPLAY (blackness) after Windows starts to load if that is set to PCI VGA.
For Win 2000, XP, you often get a display after Windows starts to load even if that setting is wrong, but the video is in PCI mode and the advanced features of the AGP card do not work. Some recent mboards will also produce a beep code indicating the bios is set to the wrong video type.
.....Possible?
If the card has both VGA and DVI outputs, you may get no display connected to DVI only because the VGA port connection is the primary adapter and the computer bios cannot recognize the DVI as a secondary adapter??Unlikely.
If you get no display even for the first part of the boot...
The A7N8X-E has a known problem recognizing an ATI 9700 card if the graphics aperature size in the bios is set to above 128mb - solution: flash with bios version 1011 or above.

Possible.
If everything else is right but the ATI chipset is not recognizing the monitor, I've seen some cards with ATI chipsets where you may get no display even before Windows loads. However, I've only seen this happen AFTER you install the drivers for the card properly, e.g. from it's CD.- make sure the monitor has been on for at least a few seconds before you boot the computer.
- despite the fact you have no display, very shortly after booting press F8 repeatedly while booting, don't hold the key down, and you will get the Safe Mode menu - choose Enable VGA mode (NOT Safe mode) - the computer will boot normally, but the video will be in a basic VGA mode. Go to Display - Settings - Advanced - Monitor - and change the monitor drivers to Plug and Play Monitor, or better still, use Have Disk and load the proper drivers for the monitor from it's CD, or if the CD has an install program, install the drivers using that.
Restart.
Start up normally.
You should have normal video for the card.

My card is full function DB15/DVI/TV circa 2002
> Default display is at a 60HZ vertical refresh rate -
> the monitor must be capable of a 60HZ display.
> (for the first part of the boot)The Dell2500 runs at 60Hz
> Asus A7N8X-E manual
> "Install only 1.5v AGP cards on this motherboard.The Radeon is 1.5V
> Advanced Chipset Features
>
> AGP Frequency - Auto (default)Set at Auto
> AGP 8X Support - Enabled (default)
Set to Disabled
> Graphics Aperture Size - 64mb (default)
Set to 128MB
Radeon has 32MB, so adjusted this in BIOS and rebooted with high hopes, but still a blank screen.
> Primary VGA bios - PCI VGA card (default)
Set to AGP VGA card
> Possible?
> If the card has both VGA and DVI outputs, you may
> get no display connected to DVI only because the
> VGA port connection is the primary adapter and the
> computer bios cannot recognize the DVI as a
> secondary adapter??That's been my conclusion, but do not know how to force the BIOS to accept/recognize a Secondary adapter. I can find no explanation on the web of the recognition sequence and what interaction there might be between the VGA BIOS and the computer BIOS.
> Unlikely.
> If you get no display even for the first
> part of the boot...BIOS is 1013
> I've seen some cards with ATI chipsets where you may
> get no display even before Windows loads. However,
> I've only seen this happen AFTER you install the
> drivers for the card properly, e.g. from it's CD.That's my case, there is no DVI display at boot or any other time. The drivers were installed by W2K in analog mode by 'update' from Microsoft to get the latest supported drivers.
> - make sure the monitor has been on for at least a
> few seconds before you boot the computer.The monitor is always on.
>- despite the fact you have...
I will try this sequence over the weekend.
Thanks for the detailed technical assist.

"...do not know how to force the BIOS to accept/recognize a Secondary adapter...."
As far as I know it can't be done if the card is not capable of it - there's nothing in any mboard bios I've seen regarding that.
If you have both VGA and DVI outputs and the card works fine with a monitor connected to the VGA port, there's probably nothing you could do." The drivers were installed by W2K in analog mode by 'update' from Microsoft to get the latest supported drivers."
I have had several experiences installing drivers recommended by Microsoft Update that caused me problems, and I have heard of others on this site reporting that they had problems after having done that as well. E.g. a modem driver update for a voice capable modem that had no voice support in the update. I had to figure out which *.inf file loaded the drivers and delete it, then re-install the proper drivers. It is a very good thing they are not installed by Automatic Update or there would be a lot more people having problems.
I would recommend you NOT install driver updates from there - check out the manufacturer's web site instead if you really want to do that - otherwise, if you were having no problems, don't try to fix what ain't broke. In the case of ATI video chipset drivers, they are often dependant on updating the MMC (multimedia center) and CCC (catylyst control center) versions to match versions with the display driver version.So what do you do about it now? If my procedure in response 8 works, after changing the monitor drivers, if the card still does not work after rebooting in normal mode, use Enable VGA mode again and go to Add/Remove Programs and Un-install all the ATI software for the card. The next time you boot, when Windows finds the video card, DO NOT point Windows to drivers for it if it does not automatically install them, Cancel that (there may be several to cancel), let the desktop load, and run the driver install from the CD that came with the card. If Windows installs drivers for it automatically, do not reboot, go to Device Manager and Un-install the drivers, then run the driver install from the CD.
You may still have the black screen problem after rebooting - in that case use the methid in response 8 to specify the monitor drivers, and you should be fine after that.

The hardware trigger that allows a card to recognize DVI must be defunct....
On the plus side, was able to pick up another FX5200 off the bargain table at local electronics store, and that works fine.
Thanks for all the assistance

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