Dell Optiplex 780 Problem with video card upgrade!

randrewrussell · Aug 13, 2015

Hi everyone!
Here is my problem. I purchased a used Dell 780 and it worked fine but the on board graphics only supported VGA so I decided to upgrade with a PCI e card. I purchased a Dell OEM card ATI Radeon 256 from Amazon for 40 bucks and proceeded to install it. No problem right? WRONG
I got no signal and the DELL started beeping the 6 beep signal for bad card. Took out the upgrade and figured the Dell would reboot to onboard display. NOPE now no video at all and the Dell gives 6 beeps and sits there dead. Any suggestions? I am running Windows 7
thanks

jtabb1256 · Aug 13, 2015

Make sure BIOS settings are set so that it automatically switches between the integrated and dedicated graphics.

randrewrussell · Aug 13, 2015

How do I do that without a display?

randrewrussell · Aug 14, 2015

Ok
I did the cmos thing and then got the video card I think to work
but I am now getting caught in a Windows 7 repair loop.
Its indicating in windows repair mode that I have a bad driver?
signature repair problem 21298986, Auto failover, bad driver!

randrewrussell · Aug 14, 2015

I ran the Dell Diagnostics and everything checked out but there was something about
resetting the time and date which I did.

jtabb1256 · Aug 14, 2015

That's good

Is your video working properly now?

And when you do stuff with CMOS, resetting time is normal.

randrewrussell · Aug 14, 2015

Well now Windows 7 wont let me run the program. I am stuck in this repair loop and the info is that I have a bad driver. Both the on board vga and the card DVI work up till that point and then Windows7 comes on and says cant fix driver

jtabb1256 · Aug 14, 2015

randrewrussell :

You may have to do a fresh install of windows
OR
You may have to take that hard drive out, put a new one and fresh install windows. Then put the other one in there too and copy the files off of it.
OR
Maybe your computer came with a disc that lets you install the stock drivers?

Have you tried putting the windows disk in and done a repair?

Kisianik · Aug 14, 2015

randrewrussell :

Which model is Dell 780, Optiplex? And which form factor, mini tower, desktop, small form factor?
And what is exactly video card model, I can not even guess?

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Dell Optiplex 780 Problem with video card upgrade!

randrewrussell

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randrewrussell

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randrewrussell

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randrewrussell

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jtabb1256

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randrewrussell

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Kisianik

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