HNS2600JF Does Not Post - Debug Tips?

I have a HNS2600JF compute node that does not post.  First, the fan would spin up slowly, then a few beeps, then a long series of quite a few beeps, then the fan would rev up to max.  There is nothing on the VGA display, just the fan running at max.

Any idea on how I may debug?   Is using the status leds the only option to get some diagnostics?

Thanks