Problem mining with more than 3 cards. rx 570, b250 pro4

The system boots fine and can mine with 3 cards but when I put 4,5 cards, the system

fails at booting with error code" Blinitializelibrary failed 0xc00000bb."

keyboard doesnt work as well. But all the fans run fine.

So far I've tried:

1. updating the bios to the latest version
2. complete reinstallation of windows 10
3. adding more RAM
4. disabling secure boot

My system's setting is:
Asrock B250 Pro4
EVGA1000W
some kaby or skylake celeron
8GB RAM
32GB ADATA SSD
5x 570 sapphire pulse.