HP proliant dl360 g5 fails to reboot

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http://serverfault.com – Some history of this also available here. As of my latest update on the forum linked above, now cold reboot as well as hard reset and following boot for my proliant dl360 g5 works as expected and successfully boot the system. However, soft-reboot results in internal health indicator turning RED on the front and long beeps every around 6seconds until I either cold reboot or press and hold the power button. A summary of system state when this happens: Internal Health led indicator: RED External Health led indicator: Green No led next to any component is red or amber No POST message neither (HowTos)