When you did the Vista upgrade it kept the old XP OS in some saved area.
I suspect, you will find it by going to the add/remove feature and see if XP is present.
If you have both recovery XP and the Vista upgrade, then you can use either DBAN or Killdisk(google for them) to totally wipe out the HD. Do this only if you have the CDs/discs fore mentioned, if not you probably have a hidden partition for system recovery. HP is very helpful in this whole process, visit the support website and review such details. The startup is suggesting you have some "dual boot" menu, but you didn't mentioned that wording, is that the case?
If you totally delete/wipeout the HD, then it is clean. You can start the Vista install with upgrade disc, when it asks for XP(previous OS) place CD in and it will verify old version to continue install. That way, only the Vista OS will be present once all is done. Otherwise for XP as the lone OS, then again wipeout HD, and do a XP recovery provided you have the recovery CD. Come back with details if hidden partition.
I have a HP7330n computer that I will be giving to my Grand Daughter when I get a new computer.
The computer had XP when I bought it, but I upgraded to Vista Home Premium.
I would like to do a system recovery to get it back to the original configuration before giving it to her.
My question is, when I do the recovery what will it go back to? She does want to keep Vista.
I still have the Vista upgrade disc.
When I shut it down and do a restart, it comes up with a screen that asks if I want it to start in Windows Vista or a previous version of Windows. If I just leave it, it starts in Vista.
I have done system recovery before, but am confused on this one.
Thanks in advance