Problem installing new graphics card in a Dell

Codejack

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Nov 11, 2005
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So, my mother wanted a video game for Christmas: The Witness, a kind of Myst-like... something. No idea.

She supposedly got a pretty decent compute, which it is (Dell Inspiron 620, i3 3.3Ghz, 8GB Ram), but onboard, Intel graphics, and a VGA output.

Well, I have video cards just lying around, so I take a couple with me:

AMD 5750
AMD 6770

And then there was the old one from my father's computer:

GeForce GT620

The first problem was that her power supply didn't have a 6-pin plug (300W, too...), so I tried the GT620.

No signal on DVI from card, VGA from onboard graphics said it was disabled automatically when it detected another card.

So, maybe even that video card needed more power, so I went home and grabbed a spare 600W PSU, hooked it up... same problem.

I tried the 6770, since that was what I was going to put in, anyway, and it did the same thing. I tried the 5750, and it didn't detect it, at all, and just booted up normally on the VGA port.

Any thoughts?
 

Th3pwn3r

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Aug 29, 2011
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Does the BIOS have a way to enable/disable the slot? I'll show my age and say I remember such a feature for AGP cards back in the day :) Maybe there's a way to enable what display output is working?

Also, try another cable, try blowing dust out of the system, try running the onboard video and checking control panel and see what it shows with whatever video card is installed.
 

Codejack

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The bios only has an option to disable the video sharing, where you can run monitors off of both onboard and expansion graphics. I tried changing it, but it didn't make any difference, and it didn't have the option at all when the 5750 was plugged in.

Tried another cable, dust should have been taken care of by the 3rd switch, and I blew out between swaps, device manager just says Intel 2500 graphics with the 5750, and it doesn't boot with the others.
 

Codejack

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Nov 11, 2005
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No, I know the video cards are all good, but then, it seems unlikely that a 2-year-old Dell that's only ever been used for office work would have a bad PCIe slot.

I guess I'll figure something else out.