On Sun, 7 Jan 2018 15:45:13 +0000, Handsome Jack
wrote:

snip

Easy to find on the interwebs? What do you need?

I don't know.

Ok ... Do you have an existing system or a COA (Licence) sticker you
could refer to perchance?

On an existing system there are tools that will display the *actual*
code in use, rather than what is being displayed (Belarc Advisor being
one and that also tells you a lot of other things).

Googling for "XP installation disk" produces a large
amount of contradictory advice.

Sure, but you might be mixing terms / needs there. An 'installation
disk', as supplied by the board or box manufacturer then if it was a
big player then might be able to buy a replacement (unlikely now) or
find / download / torrent one somewhere.

Or (and better imho) is to see what version you are currently running
(see above and look at the System display in Control panel and it
should say something like Windows XP Professional 64 bit so that's
what you are looking for. I think there were also two versions around
2002 (so before and after etc).

From there you just need the boot / install media, follow the prompts
and not long later you will have a fresh install. You may still have
to install some drivers but again, they should be available from the
board or box maker, is XP was originally an option.

Cheers, T i m