For the first time I have tried with original bios and it is not working with 6 cards !!!

Magic

Thank mazq, but no luck

Tried every card alone - working,
change risers, slots, when  sixth (on any slot) has been removed everything is working.

Thanks for respond

tried GEN1 / GEN2 / Auto
Tried other  and with two PSU
Rebooting on windows startup
Before driver patch there are six cards in device list.
Yes H81 Pro R 2.0

Hi guys,

please help
Asrock h81 motherboard 6x Saphire rx560 4gb

bios mod:
1750 timings -> 1875, 2000

driver patched

5 cards working well (13,7). Plugging in sixth card windows resets on booting
Win10. Driver 17.xxx
Thanks