How do you load Windows XP on a federally donated PC that has been DOD wiped and has no OS?

if there is still a hard drive with sufficient space and there is sufficent ram you can place an xp oem CD in the cdrom and boot the computer and there should be on screen instructions that can guide you through the rest of the setup process the oem xp CD will run around 145-200$u.s. make sure it is oem or it will not have the boot codes