With the inability to boot, how have you determined that the CPU is rock steady? That the DRAM and GTX60s are operational? Perhaps you have tried them in another MB? What happens with DRAM in B1 and B2 only? (Looking for isolation that may say socket A2 has a bent pin or something.) Have you inspected the CPU socket since mounting this CPU - remove it and look for bent pins. (Unlikely with A1 and B1 working, but it's on the checklist.) What CPU cooling? Firm, even, and not too tight seating of a cooler is also on the checklist.
Bent socket pins are a possible cause of PCIe failures, but the M6E has another one - the Plex chip that expands the CPU's 16 PCIe lanes to multiple 16-lane sockets. The Plex chip is a bear to troubleshoot and needs a MB RMA to fix. I suggest flipping the four PCIe socket switches a couple of times to be sure they have good contact internally.
Memory and PCIe are derived from the CPU System Agent. Vccsa, Vio-a and Vio-d effect these connections. A small increase, manually in BIOS, may help - about .02 to .05 volts keeping the differences between the voltages constant.
Good luck
Jeff
Bent socket pins are a possible cause of PCIe failures, but the M6E has another one - the Plex chip that expands the CPU's 16 PCIe lanes to multiple 16-lane sockets. The Plex chip is a bear to troubleshoot and needs a MB RMA to fix. I suggest flipping the four PCIe socket switches a couple of times to be sure they have good contact internally.
Memory and PCIe are derived from the CPU System Agent. Vccsa, Vio-a and Vio-d effect these connections. A small increase, manually in BIOS, may help - about .02 to .05 volts keeping the differences between the voltages constant.
Good luck
Jeff
