HP Proliant dl380 g3 "Non system disk"

[Hitman92]

I have 4 hp proliant dl380 g3's that someone gave to me.

I have never configured a server so bare with me.

None of them have operating systems on them and when ever I try to install one the POST will go through its stages and then it will say "Non-system disk"

It has a Smart array 5300 controller on it with 6 physical drives configured to 1 logical drive.

I've tried reconfiguring the logical drive and still nothing.
Also I've tried it with many different operating systems on different media's

Any help would be greatly appreciated