New video card doesn't work

Gigabyte Radeon hd 7970 graphic card - 1...
April 29, 2012 at 11:23:49
Specs: Windows 7 64bit, i7-950 3.06GHz, 6 gigs
I recently tried to upgrade to a Radeon HD7970.

Last summer I was using a Radeon 6950, but it burned out due to some poor case cooling issues and playing hard on hot days. I replaced it with a GTX 560 Ti, while I worked on the cooling issues. The card works great, it's just a little more low-end than I'd like. So I ordered a Gigabyte HD 7970 from newegg. Hooked everything up and when everything is good to go, I boot the system and no video comes on. All 3 cards above all use PCI-E x16 slots, which is the slot i'm using on the MOBO. Only 1 video card is connected to the MOBO. I RMA'd the HD7970 and the replacement is doing the same thing: giving me a blank screen. I don't have access to a 2nd PC to place the card in and test if it's only the card.

I bought a power tester and my PSU is putting out the right wattage and voltage, but I don't know how to tell if it's putting out it's full capacity of wattage, to power the higher demand video cards.

OS: Windows 7 64bit

Motherboard: GA-X58A-UD3R

CPU: Intel Core I7-950 3.06 GHz

PSU: Corsair HX1000W

What should I do?

Edit1: Also, this seems self explainitory... but... Yes, all the connectors are secured onto the video card. It uses a 150W and a 75W, both of which my PSU has.

See More: New video card doesnt work

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April 29, 2012 at 11:54:12
Gtx 560Ti isn't a low-end card, it can play many titles at high and very high settings.
If all connectors are connected well and and the card is seated well in pci-e x16 slot then the problem is the video card itself. Ask a friend or neighbour if u can test your hd 7970 in his or her system.

Where do u put the tower? How many system fans do u have installed?

You know the real meaning of peace only if you have been through the war.

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April 29, 2012 at 11:54:23
Are you SURE you have both power connectors connected to the sockets on the mboard itself ?

Did you REMOVE the AC power to the computer at ALL times when you were fiddling with the video card or any connections inside the case ?
If you didn't do that at ALL times, you may have damaged the circuits of the video card, or the PCI-E X 16 slot, or both.

If you HAVE damaged the card, it won't work with ANY computer.
Can you try it with another desktop computer ?

If you HAVE damaged the PCI-E X16 slot circuits, that slot will NOT work with ANY video card.
Try your previous video card in it.


AMD Radeon™ HD 7970 Graphics
System Requirements

■500W (or greater) power supply with one 150W 8-pin PCI Express power connector and one 75W 6-pin PCI Express power connector recommended.
■Certified power supplies are recommended. Refer to for a list of Certified products
■Minimum 4GB of system memory

Your power supply and ram exceed the minimum requirements, and you have the proper connectors for the card in your included power supply's wiring.

However, it's possible you damaged the PS because of something you did or didn't do, or it's otherwise become defective.

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April 29, 2012 at 12:37:56
@1, The cooling is fine. Here is the case:
I removed the window and installed a side-mesh that has x4 180MM fans on it. CPU core doesn't go above 55C, not sure about GPU, but it I don't notice any significant heat coming from the exhaust. The computer's reverse side is against a wall, there is plenty of room for intake/exhaust on all 3 sides.

@2 I turn off the AC and remove the cord before opening the case. Previous video card works just fine. Friends keep telling me to SLI it instead of bothering with a newer card. I sent the first HD 7970 back to RMA and got a new one, and I'm encountering the same problem. I either have a 2nd DOA or something is wrong in my box.

I'm working on finding a 2nd computer to place the card into it, but it's looking rather difficult to find a friend that has a compatable power supply.

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Related Solutions

April 29, 2012 at 12:57:44
Take your PSU when your going to test the video card in another system.

You know the real meaning of peace only if you have been through the war.

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April 29, 2012 at 20:19:03
It's extremely unlikely you got two DOA cards. For that matter it's unlkely you would have even had one.

Can you try it with another desktop computer that has at least a 500 watt PS ?

Malfunctioning power supplies are common - a lot more common than a DOA video card. If you can, try a different PS from a working system that has at least a 500 watt capacity with your system.

Your main chipset on the mboard supports either SLI mode (NVidia video chipsets only) or Crossfire X mode (ATI / AMD video chipsets only)

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April 29, 2012 at 21:07:22

Apparently ....

The HD 6950 and the GTX 560 Ti require a recommended minimum 500 watt PS and two 6 pin PCI-E connectors.

The HD 7970 requires a recommended minimum 500 watt PS and one 6 pin and one 8 pin PCI-E connectors.

The HW1000 has either 6 (in the specs) or 4 (in the manual) 8 pin - 6+2 - PCI-E connectors.

Found on the web....

"The original 6 pin, 75 watt specification was for a minimum current of 2.08 amps for each +12 volt line, hence 75 watts.

3 +12 volt lines x 2.08 amps each = 75 watts.

However, The 6 pin PCI-e power connector is actually capable of handling more than 75 watts.

3 +12 volt wires x 4.16 amps each = 150 watts maximum wattage.

The two black ground wires were added to handle the increased current. "

If there's something wrong with the connection of one or both of the extra ground wires, the 7970 probably can't get enough current, despite you having a 1000 watt PS.

Have you tried different 8 pin connectors ?

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April 30, 2012 at 09:07:49
@4&5 Still no alternative PC available to swap the card into and test

@6 This morning I booted the comp with the GTX 560Ti for about 10 minutes, then swapped the card and used the aux 8-pin 150w and aux 6-pin 75w cables and the HD7970 was able to get video. It's working right now, I'm not sure if it was warming the comp up (I've read threads on this) or the cable swap. Things look good but it's turned around from this point before. If the card stops working, I should do what? Consider it a PSU problem?

Edit1: This seems like just an inconvenience, but I want to note: It takes about another 5-10 seconds longer for the video input to register than the 560Ti. Othewise everything is ok. I want to wait to start the card cold before considering this resolved.

Followup: After turning the computer off for 30 minutes and launching it back up, the HD7970 wouldn't get video. Going to try the card in another computer later today. I really don't have too much against the GTX 560 Ti, other than my main video input is HDMI. It has a HDMI mini port, and the adapters are all poorly designed and rather expensive.

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April 30, 2012 at 19:54:06
The HD 7970 works fine in my friend's system. He said my motherboard is bad. What now?

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April 30, 2012 at 21:33:07
Did you try starting in safe mode with networking, deleting the NVidia drives and downloading the correct drivers? If not then do this and restart.

You have to be a little bit crazy to keep you from going insane.

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May 1, 2012 at 10:37:31
The software on the hard drive, including the specific video drivers and associated software for a video adapter, has absolutely nothing to do with whether you get video BEFORE the operating system loads while booting the computer. All modern mboards, computer related video adapters, and operating systems (before you install specific video drivers and associated software for a video adapter) have built in basic video support.

It's much more likely to be a problem with the power supply - either it's become defective, or at least one of the combo 6+2 PCI-E connector's wiring has something wrong with the 2 pin part of it.

If you DO have a problem with one or more combo 6+2 PCI-E connector's wiring, then it's probable that at least some of the other ones should allow the 7970 card to work fine.

The only way you can rule out the power supply being defective as being the cause of your problem FOR SURE is to try connecting another known good PS to your system that has at least a 500 watt capacity, and at least one 6 pin and one 8 pin PCI-E connector.

My brother had an Antec power supply that had the situation that the only thing wrong with it was it could not handle an additional load on it properly anymore. It had a lot more wattage capacity than was required, and the accuracy of the voltages were fine. His problem was the computer would black screen and restart for no apparent reason when he placed a small additional load on the system - trying to burn a CD.
I tried another power supply and found his system had no problem with the same hardware.
He RMAed the PS and the replacement they sent him - same Antec model - then worked fine with his system.

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May 1, 2012 at 11:39:05
@10: PCI-E 6+2, I've mixed and matched 4 different aux connectors as well as the default ones (the manual notes to not mix the ones that come straight out of the PSU with ones connected to the detachable cables) and I've had no luck. I was actually able to RMA my HD6950 and get a replacement. When I booted it the first time it seemed to work fine, and on the second time the screen was tinted yellow. Every attempt after I got the blank screen. The HD6950 has 2 6 pins, just like my GTX 560 Ti. I got a antec PSU tester (Link below) awhile back to see if it's been my PSU giving me the problems. Everything came out ok, but I haven't found a way to put my PC under sufficient load to cause it to shut down.

I'll see what I can do about finding a power supply that's 1)500watts and 2) has a PCI-E 8 pin and 6 pin connector to test it.

Thanks a lot for the input.

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May 1, 2012 at 16:10:58
"I was actually able to RMA my HD6950 and get a replacement. When I booted it the first time it seemed to work fine, and on the second time the screen was tinted yellow. Every attempt after I got the blank screen. "

That probably confirms the power supply IS malfunctiong, and the fault is not with the wiring for the 2 pin part of the 6+2 PCI-E connectors.

Your HX1000 apparently has two +12v sections. Sometimes one of them malfunctions.

If I had tested that faulty Antec power supply my brother had with the Antec tester you bought, it would have passed.

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