HP ProLiant DL360p Gen8 6 of 8 memory module become degraded suddenly!

[Kflihan]

Dears, 

We have HP ProLiant DL360p Gen8, BIOS P71 07/01/2015

suddenly 6 of 8 dimms become degraded without any IMLog, no error message founded.
we powered off the server and powered it again and the memory get back in normal status, the server is working fine!

Do you have any advisory related this issue ?

Many Thanks in advance.

[Kflihan]

mmm, no body have any idea!!

[mkuru]

same error ML350 G9