Try putting in the memory in pairs and see if you can find a bad stick.
Hi everyone, We have a PE R720 92Gb Ram DDR3 and 3Tb HD, BIOS version 1.1.2, iDrac 7. The problem arose when trying to update the BIOS by configuring IDRAC -> update -> search for the file BIOS_DYH8T_WN64_2.7.exe. The server was installed with vmWare 6.Never before should someone update this server. and the update process will be maintained for a long time and I do not spend more than 1%, it will restart in the iDrac and then the hard disk and memory will not be recognized and the server starts. Now the screen shows "configuring memory..." and does not progress. The BIOS version remains the same (1.1.2) but now it does not start as I say.Currently I have access to perform the process of updating the version using iDrac but it generates the following error "File RAC042 not valid for firmware update ....." Thanks in advance. Blessings.
PowerEdge R720 memory configuration error after BIOS update