My specs:
Rampage IV Black Edition X79
PNY Performance Edition 2x8GB DDR3 1600MHz
Intel 4820k
2x EVEGA GTX 780ti (SLI)
Cooler Master 1200W Silent Pro Gold
Samsung 840 Pro SSD (OS drive)
Phanteks Enthoo Primo case
CPU, 2xVGA under water blocks
BIOS revision 0701 x64
Windows 8.1 (64-bit)
CPU at stock speeds, DRAM set to frequency & timings on product description
AI Overclock Tuner - Auto
My Problem:
I built this rig about six months ago & never had a problem with it up until recently. Occasionally on reboot I do not reach POST and hang with Q-Code 94 (PCI bus enumeration). I'll have to cut power to the system, drain the caps, and reboot several times in order to make it to POST. I'd say about 80% of reboot attempts hang on code 94. When I do make it to POST, the system boots to Windows fine. But then 30sec-15min later Windows will freeze with no BSOD. Hitting the reset button on the mobo has no effect during these freezes.
I have set all PCIe to GEN2 - no effect. I have disabled HPET - no effect. I have re-installed Windows entirely - no effect. I have removed the RAM from DIMM_B1 and have one stick in DIMM_D1 I've swapped the stick in DIMM_D1. I have removed the second GTX 780ti, & swapped the first. No change in behavior.
Please help before I put my fist through my monitor.
