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No Video on Boot with New Graphics Card Installed

About two years ago I built a computer with the AMD A8-3870K APU. I'm now trying to install a discrete graphics card to use the dual graphics feature the APUs have.

I installed a Gigabyte ATI 6670 in the PCI Express slot and have tried connecting it via both HDMI and VGA, but there is no video output. If the graphics card is installed, the motherboard VGA doesn't output any video either. I have installed the card in another computer and it booted fine there, so it isn't DOA. I don't think it is a problem with the power supply output either as the power draw of the 6670 is roughly 65W. I have a 450W PS in right now, but I installed a 500W and got the same result. This graphics card does not require a direct line to the power supply.

Current Build:
MSI A75MA-P35 FM1 AMD A75
AMD A8-3870K APU
Rosewill Stallion 450W PS

Adding:
Gigabyte ATI 6670 GPU
8 answers Last reply Best Answer
More about video boot graphics card installed
  1. This may sound silly but did you check to make sure that you plugged the PCI-E connectors firmly into your GPU? Make sure they are connected.

    Also is the GPU spinning up?
  2. _Shadow_ said:
    This may sound silly but did you check to make sure that you plugged the PCI-E connectors firmly into your GPU? Make sure they are connected.

    Also is the GPU spinning up?


    Yeah, it's in there good.
    The fan spins, and all the lights and other system fans come on as well, but there's no video. Usually if there's a video problem the system will beep a certain code to indicate that video cannot be output, but it isn't doing that either.
  3. Make Sure your mb bios has all of the bios updates could bea bios bug. On the mb check that the pci four or eight pin power connector is connected.
  4. smorizio said:
    Make Sure your mb bios has all of the bios updates could bea bios bug. On the mb check that the pci four or eight pin power connector is connected.


    I'll check out the bios version, but I just updated it a few months ago.

    I'm not sure what you mean by the pci power connector. This graphics card does not require a direct line from the PS if you are talking about the 6-pin connector that usually runs to a graphics card. I have the 24-pin connector and another 4-pin connector that run from the PS to the MB.
  5. smorizio said:
    Make Sure your mb bios has all of the bios updates could bea bios bug. On the mb check that the pci four or eight pin power connector is connected.


    BIOS are up to date.
  6. Best answer
    Has your BIOS an option to enable and disable secure boot? If yes, you should disable it as shown in this video: http://www.youtube.com/watch?v=5nG4zMdrHKs

    Hope this helps.
  7. configured from the BIOS activates the expres pci video will give you dedicated, secure is set to boot from the integrated and dedicated by him installed
  8. Just looKed at your power supply try another one .some of the older unit had more then one 12v rail and can't output the amps for a gpu.
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