I've just put together some new hardware, but it just won't boot with more than 3 GPUs. I've tried many different things, with no luck.
The system consists of:
- ASUS Prime Z270-P
- Intel Core i3-7100 Kaby Lake
- Crucial Ballistix Sport DDR4 8GB RED
- 8x MSI GeForce GTX 1070 Armor OC
- 2x 850W EVGA PSUs
It's been running fine with 2 GPUs for two weeks while I waited for risers. And I'm currently mining with two cards off risers with no issues. I can boot with 3 GPUs, but haven't tried mining, but with 4 GPUs it crashes upon trying to boot windows.
I've enabled 4G in BIOS as well as set all PCIe to Gen1. I've updated to newest firmware and disabled all peripherals I don't need (audio, SATA ports etc.). I'm running Win10 installed with AHCI and the drive as GPT.
I've tried removing the graphics driver completely but it still won't boot with 4 GPUs.
What am I missing here?