ml350g5 shutdown unexpectedly.

[buding5876]

A HP Proliant ML350g5 often shutdown unexpectedly 3-5days，then all of the internal and external health led become red and on the system board the VRM2 led becomes orange, and the remaining leds are ok.I must pull out power cable 3-10 seconds，then insert power cable.server can boot normally.But, on the system it is installed only one processor.
I have upgraded firmware use hp smart firmware dvd， I replaced a system board and power supply and power backplan the symptom do not change!
I use smartstart cd to test server，but no any error，and no error message in log about shutdown unexpectedly.

[Dave.]

Hi there,
Forgive me for starting with basics, are there any clues in the IML (Integrated Management Log)? What is tyhe operating system and do you have a recent version of PSP (ProLiant Support Pack) installed?
Regards, Dave

[buding5876]

whether hdd cage and hdd intall in serverï¼ symptom do not change!

so i think symptom have no relationship with os or pspã


http://h30499.www3.hp.com/t5/ProLiant-Servers-ML-DL-SL/Proliant-ml350-G5-do-not-boot/m-p/4090531#M71090

this thread's symptom is simular as my server,
but dont know last result.

[LuckyP_1]

When you swapped these components last time:

1. System Board
2. PSU
3. PSU Backplane

Was these components swapped out after arrival of this issue, If yes, then your problem may be with failing PSU backplane.

Also, What kind of UPS you have, what is the VA of UPS and how many PSU are connected?