My computer refuses to recognize my AMD GPU and instead uses integrated graphics

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Cassletas

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Sep 19, 2014
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My GPU doesn't even show up under display adapters in device manager. I'm using an xfx radeon r9 280x GPU with a z79x sli mobo and i5 4570 cpu. I have no idea what to do. I've installed my mobo drivers and TRIED to install my GPU drivers, but I can't use the disc since my computer won't detect the GPU, and when I try to download the drivers I get an error during installation that says "Application installation: install package failure!" With no context. When I try to use their Driver Autodetect, I get the message "We are unable to find your product or OS." I've reinstalled the GPU hardware multiple times; it is firmly plugged in, and the fans are spinning. I've had to plug my dvi cable into the motherboard because when I plug it into the GPU there is no display on the monitor.
Can someone please help me with my problem?
 
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Cristi72
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Cristi72

Cristi72

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Jun 25, 2014
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Hello,

Please give us the exact motherboard model. Usually, in BIOS you must select PCI-E graphics instead of AUTO in the Graphics setting tab (also, you can select the PCI-E x16 slot you will use). After changing the setting, save, reboot and attach the monitor cable to the 280x.
 
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C

Cassletas

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Sep 19, 2014
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It is a GA-Z97X-SLI motherboard. I remember when looking at a section of the BIOS which is I think the one you describe there were 4 options, Auto and then 3 others numbered "something" 1, 2, and 3. Which one should I pick?

Edit: I just looked in my BIOS. There is a section called miscellaneous, in it PCIe slot Configuration. I can pick Auto, Gen1, Gen2, or Gen3. I've tested them all, but even with every single option my computer still only shows a display when I plug the DVI cable into the motherboard itself, not the GPU.
 
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Cristi72

Cristi72

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Jun 25, 2014
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That setting refers to the PCI-E interface of the GPU; your 280x has PCI-E 3.0, so select Gen3.

For changing the graphics boot order, go to PERIPHERALS, "Initial Display Output" and select "PCIe 1 slot", then disable "INTEL Processor Graphics".
 
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Cassletas

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Sep 19, 2014
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4,510

Thanks for your help. I will try this in about 7 hours when school let's out; I'll come back to this thread with the results
 
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Cassletas

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Sep 19, 2014
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So I did all that, and so I lost display from the mobo. I plugged the dvi cable into the GPU instead, and still...
no signal.
I had to restart the BIOS by removing the battery for 30 seconds and putting it back in so I could actually see a display again.
What else should I do?
 
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