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Powercolor AX6870 went bad or my mobo's PCIe lanes went bad?

post #1 of 18
Thread Starter 

 So earlier this morning, i was playing Dota 2 beta with my 6870 then it suddenly hang/black screen. After that, the computer can still be turned on and running but no display output whatsoever. I have tried the other DVI port and the HDMI port of my 6870 but none worked. I changed it to the other PCIe lane and it didn't work out as well. I'm using the DVI via my Asrock Z68 Extreme4 G3 at the moment and it outputs just fine. I might be able to pick up another 6870 to use from local CL while waiting for the RMA process with Powercolor. I just want to hear other people's thought on this, would it be the GPU bad or the PCIe lanes just went bad? I just don't want to buy another 6870 then it turns out to be my mobo.

Also anyone in North Phoenix area (101/ 59th Ave) can help me test the card your rig please PM me. Thanks.


Edited by Ocnewb - 3/2/12 at 11:52am
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post #2 of 18
Reseat the card, which you probably already did. Now on Sandy Bridge the PCI-E lanes are provided from the CPU, if it's slightly off in the socket problems like this can occur. Go ahead and reseat the CPU and heatsink and see if this fixes, which hopefully it does.

Now if it doesn't, you have two things to do. Test the video card in another system- if it works you should RMA the motherboard. Test another video card in the PCI-E slot, if it works then you should RMA the video card. This is the best troubleshooting for the scenario and good luck.
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post #3 of 18
Thread Starter 

I re-seated the CPU and heatsink earlier today and it still didn't work. i shipped the 6870 out for RMA service to Powercolor yesterday (submitted RMA request and got the RMA # within hours so i was able to ship the card out the same day i requested RMA lol). I was trying to use an old suppose to be perfectly working 5870 and still it didn't output anything. I tried both PCIe lanes as well. Now i'm still not sure if the supposed to be fine 5870 was bad or the mobo was bad. Is there anyone in North Phoenix area willing to help me test my 5870 in your system please? Would love to see another OCNer's rig as well thumbsupsmiley.png

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post #4 of 18
Happned to a asus 6850 that I luckly or not got from newegg open box. I had to send it back. I just couldn't get it to work after a few days of working. it would hang with a black screen a few mins after restarting or turning on the computer.
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post #5 of 18
Thread Starter 

Thing is i'm not even sure if the Powercolor 6870 was bad or the mobo is bad since the 5870 didn't work too. I turned my comp on and it seem that everything lighted up and started normally, just no output no matter what.

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post #6 of 18
also when you reseat it rub down the contacts with clean blank printer paper finger oils some time cause funky stuff to happen. i have brought dead machines back to life with that trick. also fold up the paper and clean out the pcie slot too.
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post #7 of 18
Thread Starter 

This is the first time i ever had problem with my custom rigs and i've built at least 10+ rigs, pretty confusing since i haven't had much experiences lol. I re-seated the CPU and applied the new TIM and everything. My rig turns on just fine if i use the onboard GPU of my i3-2120, just no display when i was trying to use the 6870 and the 5870 (not sure if both are bad). Everything happened while i was playing Dota 2, it just turned black then hang then never output anything again after i reset.

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post #8 of 18
Quote:
Originally Posted by cdoublejj View Post

also when you reseat it rub down the contacts with clean blank printer paper finger oils some time cause funky stuff to happen. i have brought dead machines back to life with that trick. also fold up the paper and clean out the pcie slot too.

0.0 NO! if you do it wrong you can bend the contacts in the bus i have seen it happen more times than i care to
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post #9 of 18
Thread Starter 

That is true, i would never touch the pins myself unless there are visible bent pins to my eyes. I'm gonna bring the 5870 over to a friend house to test it in his rig, if it runs fine then the mobo definitely is the bad one here.

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post #10 of 18
Quote:
Originally Posted by Ocnewb View Post

That is true, i would never touch the pins myself unless there are visible bent pins to my eyes. I'm gonna bring the 5870 over to a friend house to test it in his rig, if it runs fine then the mobo definitely is the bad one here.

good idea thumb.gif
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