Hello,i have a ASUS P5E3 PRO . A NVIDIA 8600GT at first PCIEx16 and at the second AJA KONA LHE that is PCIE x4. In the bios settings i force the PEG to 1x to work these cards together. When i disable system doesn't start.What's going wrong. Note i have enabled AUTO PEG CONTROL.SYSTEM WITH 2 PCIX16 CARDS WORKS FINE.