Intermittently, this system will fail to POST and boot loop repeatedly (sometimes for hours) without making it past the BIOS screen. The errors appear to be PCIe related, but no additional PCIe cards are installed. When the errors occur, the LightPath display shows a single LED for PCI
. The error LEDs on both PCIe risers are unlit. The IMM logs some combination of the following messages:
Fault in slot "All PCI Error" on system "..."
A software NMI has occurred on system "..."
A Uncorrectable Bus Error has occurred on system "..."
Completely powering down the system and disconnecting power for a minute or so sometimes helps.
Interestingly, once the system makes it past the initial BIOS screens to OS loading, generally it will finish booting and run 100% stable for weeks to months.