Gigabyte Radeon 7970 Windforce - tow cards in row - faulty. Possible?

samedi 4 avril 2015

Hello and welcome!



I need your help mates... because I have no idea already...



First of all, here is my PC:

CPU: I5-2500K (non OC)

MB: AsRock P67 Pro 3

RAM: 2 x 4 GB Kingston HyperX Black

PSU: XFX TS 550 W

GPU: Gigabyte Radeon 7970 Windforce factory OC



At first, I bought used XFX TS 550W (used to power-up bitcoin miner: Antminer S1) with 4 years and 3 month warranty left.



Then I bought used Gigabyte Radeon 7970 Windforce (non OC version, stock AMD clocks) - and here problems started. First boot - OK, no problems, windows installed it's own driver. Then I rebooted the PC and got this:



http://ift.tt/1GcxrWY

http://ift.tt/1GcxrX2

http://ift.tt/1GcxuC7



These artifacts never shows, when PC is booting "from zero", but while rebooting the OS (and not at every time).



Second problem with this card: When I install driver (newest Omega), computer needs to be rebooted at the end of installation. Its normal, yeah. After reboot, everything is OK. But if I reboot the OS one more time, the resolution is the lowest as possible, and Windows is trying to install drivers for VGA.



First idea: the card it's faulty, so I returned it to the seller, and got money back.



As I was 100% sure, that the card was faulty, I bought another 7970 form Gigabyte, but this time - factory overclocked (but not GHz edition).



And guess what happened...The same problems, the same artifacts, all the same. Even problems with drivers is the same.





Here is what I did already, to find out reason of my problem:

1. Checked voltages with voltage meter - all are OK.

2. Checked the card on another PC, but with mine PSU - no artifacts, but problem with drivers still persist.

3. Temperatures are OK.

4. BIOS of GPU and MB is newest.





I don't have such problems with my old Gigabyte 7850 1 GB card...



Is it possible, that my motherboard or PSU are faulty?



Now, I don't know what should I do... Return the card to the seller, or maybe change motherboard?



And today I was playing CS:Go - after ~1 hour of playing - black screen, no signal...





I don't know.. Two cards in row, and exatcly the same problem?



What do you think? Please help me.



Greetings.





Gigabyte Radeon 7970 Windforce - tow cards in row - faulty. Possible?

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