Hello,
I'm trying to run 7xXFX RX 480 GTR Black (8GB) on MSI Z97 Gaming 5.

Every time I connect 7th GPU my rig won't even start, it just shows this right after power on:
https://postimg.org/image/45s15sapz/
(80x25 text mode with totally corrupted characters, blinking)

I've tried to:
- use various risers (ribbon powered, ribbon non-powered, two types of USB including version 005S)
- play around with BIOS seetings (GEN1-GEN3)
- add extra PSU (1200W+750W, both 80PLUS Gold)
- turn off all unnecessary devices in BIOS (LAN Adapter, Audio, legacy IO)

None of this helps when all 7 PCI slots are in use. Regardless of what I do, end result is always the same.
With 6 GPUs system starts OK.

Any ideas?