Motherboard not reading gpu

cheekibreeki · Aug 28, 2013

I built a brand new system for a friend, only his motherboard (asrock z87 pro4) isn't recognising the card (xfx R7870 oc). We tried disabling the onboard gpu, we tried reseating it several times, the six pin powercable is plugged in correctly, we installed the drivers and we set the primary video output to pci-e in the bios. However, the motherboard has a function where you have a picture of the board where you can see what components are plugged in. It reads everything, but it says the the pci-e slot is empty. Wat do?

mauller07 · Aug 28, 2013

did you plug in both 6 pin power connectors? i also have a 7870 and it needs both 6pin pcie to work.

i would also run the motherboard on its integrated graphics if its still not working and update the bios, its a fairly new board and it could be a compatibility problem.

cheekibreeki · Aug 28, 2013

mauller07 :

There's only one 6-pin connector, there is another connector next to it, but that one is used for crossfire.

mauller07 · Aug 28, 2013

if this is your card http://img.hexus.net/v2/graphics_cards/amd/XFX/R7870/r7870-07.jpg both 6 pin power connectors need connecting, every 7870 NEEDS both 6 pin power connectors.

cheekibreeki · Aug 28, 2013

werner123 :

Guys, I'd really love to, but there is only one 6-pin connector.

cheekibreeki · Aug 28, 2013

mauller07 :

This is the card http://www.iphonemod.net/wp-content/uploads/2013/05/XFX-Radeon-HD-7870.jpg It says r7870 on the box.

mauller07 · Aug 28, 2013

http://images.techhive.com/images/article/2012/11/graphic-100012322-orig.jpg it still has two pcie 6pin power connectors, if yours did not come with 2 like on the picture i posted then you have gotten a duff card that should not have made it past quality assurance.

the pcie 6pin connectors are the black connectors on the top right edge of the card in the picture.

cheekibreeki · Aug 28, 2013

mauller07 :

There's one 6-pin connector and one 8-pin connector.

mauller07 · Aug 28, 2013

then plug a 6 or 8 pin pcie connector from your psu into the 8 pin connector then.

cheekibreeki · Aug 28, 2013

mauller07 :

Will try, hold on.

cheekibreeki · Aug 28, 2013

There's two six-pin connectors and each one has an additional 2-pin connector as wel. We managed to hook up two six-pin connectors with a 2-pin connector in the middle. Should that do the trick?

mauller07 · Aug 28, 2013

if nothing was forced into place against the keying of the connectors then everything should be fine.

cheekibreeki · Aug 28, 2013

mauller07 :

Everything smoothly slid into place. I'll keep you updated.

cheekibreeki · Aug 28, 2013

mauller07 :

Ok, so now the motherboard is at least detecting the gpu and we have a hdmi-monitor hooked up, but it's still not showing up in device manager.

mauller07 · Aug 28, 2013

is the computer booting and are you using the hdmi output from the graphics card for the monitor? you jsut need to install the latest amd drivers then.

cheekibreeki · Aug 28, 2013

Godspeed, you wonderful bastards. Everything is working now.

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