Louis will correct me on this, if in any way I have misread the situation.
I do not think you can use the same XP install CD on a DELL and a HP.
His link is the best that you will get, but you may not have a DELL Service Tag etc.
DELL computers are usually set up to only use their own install CD and a HP install CD often will just not work.
The 2 items > Enter Service Tag and Analyze System for Updates are specific to DELL only.
I just needed more information on the Dell Optiplex because I want to install Windows XP 64bit on it. But from the responses I got, I definitely will.
I just mentioned the HP because it was a test run on my friends pc to see if it worked. And it did with the exception to the audio, there were no audio drivers for it. My mistake, I should've been more clear.
Edited by Zx52655, 28 February 2014 - 05:20 PM.