My computer won't recognize that my card exists??

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JoeyMills_

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Oct 17, 2013
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Okay, so I just built my first computer using some new and some old parts. The only parts that arent new are the CPU (AMD Phenom(tm) II X6 1090T Processor), the mobo(Asus M4A89GTD Pro USB3), and the GPU(HD Radeon 6870). The problem is that when I go to device manager and go under display drivers, the only thing that shows up is ATI Radeon HD 4290, which is the integrated graphics. When I power up my computer, the fan on the GPU spins up and seems to be working, but when I try to reboot my computer with my moniter plugged into the GPU I just get a black screen and I cant see anything. I installed the drivers for the AMD 6xxx series graphics cards but once again, nothing recognizes that the HD 6870 is there. It really seems like its a simple mistake that is really screwing with me here, so any replies will be greatly appreciated. And on a side note, this same CPU, GPU, and mobo setup worked perfectly fine before so it's compatible.
 
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I had a similar issue, and it turned out that the card wasn't seated properly. I'd try reseating the card. If that doesn't work, check that you've plugged the PSU into the card properly. If I remember correctly, the HD 6870 has a pair of six-pin ports, both of which will need to be connected to the PSU. If none of that is the issue, your PSU might not have enough wattage to run the card; it'd help to know what kind of PSU you have.

EDIT: Also, you may want to check your BIOS and make sure it isn't set to only receive video from your onboard graphics.
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EarthenSquirrel

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Oct 11, 2013
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I had a similar issue, and it turned out that the card wasn't seated properly. I'd try reseating the card. If that doesn't work, check that you've plugged the PSU into the card properly. If I remember correctly, the HD 6870 has a pair of six-pin ports, both of which will need to be connected to the PSU. If none of that is the issue, your PSU might not have enough wattage to run the card; it'd help to know what kind of PSU you have.

EDIT: Also, you may want to check your BIOS and make sure it isn't set to only receive video from your onboard graphics.
 
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JoeyMills_

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Oct 17, 2013
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10,510
I actually found out earlier today that it was that i didnt have both 6 pins plugged into the gpu. though the fan spun up, It didnt have any power to do anything past that. So you were definately right. Thanks for the response :3
 
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