Hi,
"Asset Tag" for this try entering a Alphanumeric number and save it, if it does not save then you may try the following:
1. Clear NVRAM and then enter BIOS to key in the Asset Tag.
2. Update BIOS to the latest version and then try to key in the Asset Tag.
If the above two setps fail to register the Asset Tag then follow this link to download a utility and follow the Installation Instructions to update the Asset Tag.
Asset Tag can be a Alphanumeric number or name that your company has given to this particular server. Or it can be a friendly name that you like to give.
Booting:
If the server is not booting then make sure the bootable order is proper and make sure the internal cables to CD drive or hard drive is properly connected.
Thank You!
I am a HP employee.