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Comment: Starting troubleshooting tree for BIOS troubleshooting

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/wiki/spaces/WAR/pages/789384865
/wiki/spaces/WAR/pages/789417550

System hangs during POST

Will elaborate later, but this is to generally troubleshoot BMC issues with server motherboards.

Issue: System hangs at BIOS:

IF:

- PSU's are properly plugged in and known-working (correct LED activity)

- All pre-installed [from Vendor] MB components required for POST have been reseated


THEN:

- Configure system for minimal POST configuration [Dual-CPU systems reduced to single-CPU systems installed on first CPU MB socket; single DIMM of memory installed on first Memory DIMM slot for that first CPU MB socket]

*- If dual-CPU system, swap CPU and DIMM to confirm whether root cause is from CPU or DIMM [Need to cycle both CPU's, and less likely that 2x DIMM's fail simultaneously]


IF MINIMAL POST CONFIGURATION STILL DOES NOT ALLOW POST, THEN:

- Reset BMC via IPMI [if accessible]

- Reset BMC via CMOS battery [power drain system, remove CMOS, press+hold power button for 30 seconds]