HP Proliant DL380 G7 won't power on, UID light works, ethernet lights blinking, power button solid orange

Solution 1:

You likely have a fried (something) on your motherboard. You'll need to call HP to get support or maybe even warranty replacement. Hopefully they have some diagnostic process that can help, but this is very doubtful.

Does your motherboard have replaceable voltage regulators near the processor or power supply input? One of these going bad could cause the symptoms you describe, as well.

Surge protection alone isn't enough, especially with servers. Good battery-based line conditioning is almost necessary with modern servers.

Solution 2:

Either the motherboard is fried or, more likely, the power distribution board.
That PD board is the piece of electronics that combines the output of both the PSU's into one feed to the motherboard. It s quite susceptible to power surges.
Some dual-PSU Proliants have this as a separate board. In other models it's integrated in the motherboard itself.

In some cases the Proliant will work fine with just one PSU, but is unstable (spontaneous reboots) or won't boot at all if both PSU's are used. In that case it is certainly the PD board. (Was a recurring issue on DL380-G4 and G5 models.)

Solution 3:

In our company we have three server HP Proliant DL380 G7.

For one of them the button power off suddently didn't work when when did a shutdown.

We realize that the switch itself didn't have the same behavior as the two others which were working.

We unmount the small front panel where the button is, it's easy you don't need a screwwdriver.

And we saw that the switch inside was not place correctly, you can compare with the UUID button is the same type of electrical switch as the power on behind the front panel.

That's all.