Dunno. Compaq's are wierd. The one we have required us to burn CD's of the OS installation. It gave us a one time chance to do it as the computer did not come with any CD's.
I have 6 CD's now. I assume all those drivers are somewhere on one of those CD's, but I have not had to use them yet, so I really do not know.
It serves to remind me to never by an OEM computer.