Installed second graphics card, no video output

Quiestionnaire · Jul 24, 2015

As the title states, after installing my second R9 270x and turning on my computer, I'm no longer getting any video output. Each card works individually in each slot, but together I get nothing on my screen. I'm currently playing on my TV with an HDMI cable.

I'm running:

ASUS Crosshair V Formula-Z
AMD FX-9370 Vishera 8-Core 4.4GHz
R9 270x (HIS, original card)
R9 270x (Gigabyte)
850W PSU

Skeefers · Jul 24, 2015

Can you see the POST screen and the BIOS, or not? Also, are you using the Crossfire cable, or not?

I have the same motherboard, and the HDMI display I use always seems to come on later than it should, but I have always had a second display hooked up with either DVI or DisplayPort which came on immediately. Maybe it's an issue with the motherboard. Have you tried hooking something up with a different cable to see if that works?

Quiestionnaire · Jul 24, 2015

Nope, when I turn the computer on the TV briefly says it's "detecting signal" but soon switches to "no signal found" and goes black. I let it run for a while when I was playing with input settings on the TV, but nothing ever came up.

I have both cards in the lower two slots since the Crossfire cable is too short to try the upper two, but both slots seem to work fine individually. I just ordered another Crossfire cable on Amazon, hopefully that's all it is.

Skeefers · Jul 24, 2015

So, have you tried connecting a monitor with DVI or DisplayPort?

Quiestionnaire · Jul 24, 2015

I think my DVI-DVI cable vanished, I tried a DVI-HDMI cable to no avail.

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Installed second graphics card, no video output

Quiestionnaire

Reputable

Skeefers

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Quiestionnaire

Reputable

Skeefers

Honorable

Quiestionnaire

Reputable

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