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Jim WhiteFlag for United States of America

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Windows 8 & dual video

Hi all,
I have a brand new Dell Inspiron PC.  Delivering to client tomorrow.  They have purchased 2 matching monitors and the necessary hardware for a twin head setup.  My problem is that none of the 3 video cards I have installed work.  Or, at least, they don't appear to.  Without the video card in the PC, it boots the video from the motherboard just fine.  When you drop in a new card, no video from any of the 3 ports (2 on card, 1 on mobo).  I've done dozens of these setups in Win 7 or earlier, but I have to be missing something here in Win 8.  Any ideas?
Thanks,
jwhite
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pjam
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Not familiar with Inspirons, but you should check the BIOS to see if there is a way to set video to Auto or deselect mobo video.
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There was a setting to set Intel multi-display, but it didn't make any change in operation.  I can give it another go.  The Inspiron is Dell's home value stuff.

Thanks
did you disable that?  Intel is no doubt the on board video
Usually it should show video even without the best drivers just using generic but it might be worth it to find and download the drivers directly from the manufacturers site...

Also take a look at what the power supply is rated for. Dell's usually have tiny power supplys and they might not put a lot into the card from the mobo.

Do the cards require an additional pin connector from the PSU to add power? - Sometimes we IT folk forget about the simple things.

You can also make sure that you have drivers for the slots on the mobo (check the device manager for !). And that the slots are enabled in the bios.
@pjam - question: If it was set for onboard video and he put in a card... then the port for onboard video (direct plugging into mobo) should still work right? The author said that the video does not work on any (including mobo) when there is a graphics card in. I might be wrong but that is how I always thought it worked.
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Doesn't the onboard video already have multiple outputs? Many PC's with onboard graphics these days have multiple outputs. I'd check that first.
Ok, great info.  However, the system only has one video port which is why I need a separate card.  I'll look at the psi and see what may hold.  Thanks.
If it only has 1 output, make sure that when you add an additional video card that it is compatible, and the powersupply can support it. Also make sure you use the correct PCI-Express slot.
There is only 1 PCI-e slot on the mobo.  PSU is 300w, so I'm guessing that the system will support it.  I'm not using a beefy card, no power connection, on card fan or heat sink.
More info.
With a card inserted, I get a No DVI-I cable found.  When I attach a DVI-I cable, I get the error that there is no signal from the computer.  Going to try the Intel multi display switch in the BIOS.
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Jim White
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Figured it out and got lucky that it worked.  SOmeone I remember said something about UEFI and Win 8.  Just got lucky.  Thanks all.