Monitor doesn't detect new XFX video card

Xfx Radeon hd 6870 video card
January 4, 2011 at 09:33:20
Specs: Windows 7 64-bit, Athlon II X4 630 (2.8ghz) 4gb ram
Hi, I just installed a new XFX 6870 but my monitor doesn't detect it. I'm sure I've done everything right. The two six-pins are connected and everything else but still nothing. It's not my power supply, because I just bought it to make this work. Any suggestions?

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#1
January 4, 2011 at 09:57:07
Monitors don't detect video cards, they receive a signal from the video card - no signal, no display.

The HD 6870 is a fairly power hungry card. The fact that it requires two 6-pin PCIe plugs means that it's rated over 150W. The minimum recommended power supply is 500W plus it should have a hefty amount of amperage on the +12v rail. Which power supply did you buy?


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#2
January 4, 2011 at 10:03:26
I have a sapphire 625w. I just installed it 5 minutes before the video card. And yes, the 6-pins are connected.

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#3
January 4, 2011 at 10:09:06
Another short note; the fan is spinning.

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#4
January 4, 2011 at 11:09:27
This one?

http://www.hardwareheaven.com/revie...

Are you getting a POST beep from the motherboard? Do you have another video card (or onboard video) you can try temporarily to determine whether the new card is the problem?


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#5
January 4, 2011 at 11:19:00
Ye that's the psu.

So, this is what I've done:
1. Received the video card, but I couldn't use it since my psu didn't have these 6-pin cables.
2. I got the new psu, put it into the computer and left my old video card inside, worked perfectly.
3. Replaced my old video card with the xfx 6870, the screen won't detect any signal. It's all black...
I don't really know what you mean with a POST beep from the motherboard.. but I don't think so :P


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#6
January 4, 2011 at 17:04:14
POST = Power On Self Test.

It's a quick series of tests the board performs on itself during bootup. If all is well, it emits a single short beep, then moves on to booting the OS. If there's a problem, there'll usually be a series of beeps (beep code) which can then be checked against a beep code reference list to determine what the problem is. If no beeps are heard, that can indicate a major problem, but it could also mean no case speaker is connected to the board.


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#7
January 4, 2011 at 23:01:13
Hey mickliq, I appreciate that you're trying to help, but a friend of mine saw that I need a DVI-A not DVI-D. So what I'm going to do is to buy a DVI - HDMI adapter and then see if it works.

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#8
January 5, 2011 at 04:23:49
nope, the adaptor didn't help D=

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#9
April 21, 2011 at 09:20:59
Did you ever get it to work? I'm currently having the same problem with a Radeon HD 6870 and a Corsair TX650 power supply. Both 6 pins in, fan spinning, no signal.

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