Hi

I have a PowerEdge R720, it is running two 8 core processors and 96GB RAM.

I have installed Win 2012 server on it.

The server will run, sometimes for a couple of days, then for no apparent reason will shut down. I then have to manually restart the server.

All the logs look OK, I have looked in Windows event log and also server manager, but there are no issues showing.

After reading on the web I was suspecting a PSU issue so I tried to update the firmware, but it would not accept the update and was showing as a failed update in Lifecycle control.

I then tried to update through Lifecycle control but could not get it to read the CD drive.

The server originally came with 2 PSU, but one started flashing orange so I removed it, I am now running with one PSU, if I can resolve this issue I will replace the failed one. (the server still shuts down with one PSU installed)

Does anyone have any ideas what might be causing this?

Or where else could I look to see if the server is reporting an error?

Appreciate any help.

Many thanks

Holroyd