One of my customers had a server that would not boot.  In fact, it would turn off after about 20 to 30 seconds while the BIOS was initializing and then the red health light would flash. What was causing this was the backplane adapter that converted the SAS RAID hard drive controller to 5 SATA hard drives. I disconnected the SAS cable and the server did not shut down. After I let the BIOS finish, I then reconnected the SAS cable to the backplane and the server booted normally.

However, I did try other options. If you have a problem with your ProLiant server, try these additional solutions:

  • Find the system maintenance switch. These are tiny DIP switches somewhere on the motherboard. Flip switch 6, which is a switch to reset the configuration, and turn on the server.  The server case should have a diagram of where everything is at, be sure to double-check to see if switch 6 does this. Be sure to flip the switch back when done.
  • Remove the BIOS battery and unplug the server for 2 or 3 minutes to reset the BIOS to the default. Put the battery back in and start the server. If successful, put more memory in one at a time. If unsuccessful, put a different memory stick in and then keep trying.
  • Remove all the memory. Then put just one stick back in and see if the server boots. The memory may be under a heat shield, so be sure the put anything related to cooling back in the server.
  • Try all three of the above at the same time.
  • If none of these work, there is likely a more serious problem.