Hi.

I can't mount more than 3 Gigabyte R9 290 Windforce.
Windows freeze during installation of drivers for fourth card.
Have tried with 13.2 and 14.1 drivers.

Bamt won't start with 4 GPU too.

Main board is MSI Z87-GD65 Gaming.
I have tried on Z77A-G43 - the same problem.

All cards on Risers 1x and 16x (without molex).
Two PSU 1000W each.
8GB of RAM and Intel G3220.

Can anybody help me?

BR.