Quote from: parkers on November 21, 2017, 12:00:30 PM

It looks like bad GPU. But first look at your GPU temperature when the card is in mining mod. Maybe the problem is overheating. Or it can be the faulty GPU memory.

You tried to:
1. Change risers.
2. Change PSU.
3. Put GPU in PCI-e x16 slot.

Conclusion:
Install clean windows and put only that faulty GPU without raiser to another PCI-e slot that works.
If the card stops the same way then the card should be returned definitely.

Quote from: tenebriscaelum on November 22, 2017, 07:57:14 AM

Quote from: necas on November 21, 2017, 08:51:14 AM

Quote from: tenebriscaelum on November 21, 2017, 08:39:35 AM

Is it only in a specific GPU and after that all of your GPUs stop? Have you tried to remove the GPU that is stopping and test it again? Also have you tried it in another system maybe the motherboard. Still if you will not try all of the posibilites we cannot know that it is really the GPU that is the problem.

İt is not the specific GPU. This time another one stops. I start pc, control GPUs, see three of them:OK, run afterburner
everything is fine. after a while sometimes one hour sometimes a couple hours one of the GPUs stops and
the others remain running.
i also updated the windows and drivers...

Then try to change your ram, storage or motherboard as it is the as it is the only hardware that you did not troubleshoot. It can be quite a job yes but even the problem is the GPU stopping it can be other hardware really. Is there any indicator on your motherboard an may I just ask the full specs of your PC.

cpu g4400
ram 4gb
mainboard Asus maximus vııı
120 gb ssd
psu corsair 1200

I have unplugged all GPUs, uninstalled drivers with ddu.
After that plugged only one GPU that not working last time.
Installed driver 381.65.
after burner settings power:75, temp:65, core clock:125, memory clock:225
started mining with nicehash. it uses lyra2rev2 now, works perfect. it shows 3.80 dollars per day.
i will wait a few hours with one GPU and see what will happen.