Quote from: elissa on January 06, 2018, 12:30:36 PM

Quote from: xxcsu on December 31, 2017, 06:54:15 PM

Quote from: elissa on December 30, 2017, 11:36:36 AM

I doubt it is the PSU. I have a SeaSonic - PRIME Gold 1200W 80+ Gold Certified. My graphics cards are Radeon Pro Duo Professional with 32 GB memory. Their consumption is 200 w maximum while mining.

your cards can draw more than 250watts/cards during mining ! Max Power Consumption for those cards during "normal workload is : 250W (Typical Board Power (TBP))

I cannot even get to mining. I cannot even switch on the computer. When I turn it on it freezes with a black screen and it shows nothing. I tried 2 psu. I changed the risers, the same thing happens. I think it something from bios but don't know what for sure.
The gpu are dual so they are seen as 2. When I insert 4, motherboard sees it as 8.maybe this is the problem

Yes OS/MBD detects it as 2 GPU's. So this should be the problem and I don't think your motherborad supports 8 GPU's