What do the front panel leds on the ml370 g3 represent?

You will continue to get internal error until you add memory. It shouldn't even boot without RAM.

why not ask HP this, and not in chat rooms. (here)
raid recovery is fully documented at Hp.com
for sure, and even forum help...
you'll have to switch to the commercial, side,

https://h30434.www3.hp.com/

type this in there box.
HP Proliant ML370 G3 server

If your computer will nor start and the system fans do not turn on and stay on when you power on your PC, then either the power supply has failed, a component connected to your motherboard has failed or the motherboard itself is defective .
Power supplies require a "power good" signal back from the motherboard before they will operate.. In order to test a power supply, you need a PC power supply tester. Without one, you will either have to take you power supply to a PC technician and have him test it or install a known good power supply in your computer.
If you have any additional questions contact me by clicking on the "Add a comment" link located under your problem description on FixYa. Also, if you believe that this information was helpful to you, please rate my solution using FixYa's "Solution Helpful" rating scale.
Best regards,
Yavacotech

check your smps and the raid status if you have created any raid in the server....

-Ashok

compaq website

Unfortunately hp does not have drivers for ML370 G3 on windows 2008 this OS cannot be installed in this server, i attached the os matrix so that you can confirm.

OS Matrix

ML370 G3 OS

generation 3 servers do not support windows server 2008 there are no drivers for this OS
i include the OS Matrix for you to confirm

Use the key to open the front door of the server. Lift the door and remove it. locate the screws that hold the cover remove the screw and remove the cover.

Note that you need to have MS370 rack Kit to be able to successfully do the conversion.

There is standard Integrated ATI Rage XL Video Controller with that server.

nice servers I have 2 myself HP has this problem flashing the bios to a CPU so changing you will need to reflash the bios the flacky server remove the CPU' s
clean the surface reset the cpus apply new heatsink compound check every connecting up plg reseet theserver should become stable if you memory is okay. love my cranky HP servers and rely on my Dell servers never go down. good luck I will never do any HP i have one of the famous 9000 seies laptops was promised warranty still no warranty so i refuse to buy any HP products or recomend to anyone the older servers still work fine good going HP i still say good things about the older servers only doing upgrades is not so easy reflash the bios to upgrade my friend