I have an old HP Proliant 350 G4 server. I have stuck some new discs in it and was going to put Win2k8 on there. There was originally a cd rom and so i swapped it for a dvd rom drive to accommadate the win2k8 install disc. The thing is it will not boot from the install disc, I know this disc works as I have tried it on another machine? The boot order is correct, just don't know why it will not boot from the disc?