Frank,
In reference to:"Please confirm for us, that the computer is still running original operating system or it has been changed."
At this point I believe the computer is complete with the original OS, "XP SP3". It appears to have 2 individuals access files. One the administrator and the other an user. The administrator has restricted access due to password requirement which I don't have. I know I can get around this by doing the restore process, but, I have never done a restore with a hp computer without the restore cds. It probably would be easier to do everything with having the password but my friend doesn't have the password and her daughter forgot it! I don't want anything that would not be acceptable for my granddaughter popping up on this little computer.
In reference to: "Also indicate if the factory HP Recovery partition is still intact on this computer."
I don't see a partition mention anywhere as of yet, however, hp has that set up differently. Since I can not access the administrator section and only the user, perhaps the partition is not accessibly. I am not sure about that one.
I will check out the information you have listed for more understanding.
Thank you,
Lillian