How to upgrade bios in DL 380 G2 - HP Compaq ProLiant DL380 G2 Server

SOURCE: DELL DL-380 G5 "could not allocate page table memory" GSS 2.5

First of all, Dl380 is an hP product.
Secondly your ghost version seems a bit old as ghost 14 is the latest version. Having said that the problem could be at two ends.
1. At the ghost side where your version doesnot contain NIC drivers for PXE boot and HDD drivers for imaging. To fix this you can try manually adding the drivers to the network boot or floppy boot diskette.
You can get the drivers from HP website or the PSP CD that came with the server.

Alternatively you can upgrade to RDP instead of GHOST, RDP is Symantec's offering sold by HP for imaging it's servers.

2. There's some problem with your NIC settings or card if you are trying to PXE boot.
If you are using a floppy drive/ usb HDD, check from BIOS if it is detected.

SOURCE: I have an old hp dl 380 G2 that will not power up

The amber clearly states there are some problems with the hardware. Either with the power module, CPU or memory. Try contacting the vendor and get it repalced.