Hello.
We use S2600GZ server board with latest BIOS update (R02.06.0006), 2 x Xeon(R) CPU E5-2630L, 28G RAM, PBA G15038-350 two cards and nVidia Quadro M2000.
With BIOS version 01.02.0006 this configuration works fine. But after BIOS update to 02.06.0006 - system not starting. System show only first screen with BIOS information in cycle (without Intel logo).
When we remove nVidia - system works fine. We have change memory mapping in BIOS (BIOS error "Major - 146 - PCI out of resource" on S2600GZ ) with different values but this don't solved our problem.