Runtime Fault server HP Proliant dl380 G10

[AIIbrahim]

I have an HP Server dl380 G10, it was working fine for several months, but suddenly it started to shut down by itself at random times, with all the leds flashing for three times which means memory power fault as by the documentation, when starting over the server and running all diagnostics for the memory and HDD they all are passed, stress test is passed for 48 hours, but the server still crashes at random time, from the iLO 5 the reported error is under BIOS/HARDWARE HEALTH which is always green and OK unless when the server is crashed it gives the System Error:

Server Critical Fault (Service Information: Runtime Fault, Memory, Processor 2 Memory Channels 1-3 (04h))

I have only one Memory DDR4 size 16GB located on Processor 1 DIMM 8

I have only one processor (Processor 1)

The fault message says processor 2 channels 1-3 and those are all empty.

Searched a lot but no help,

I would appreciate any help or idea about this issue.

Thanks in advance.