hp f-10 recovery has a default mode of non destructive.
on the first page there is a button for "other options" or something like that. That one will show you a choice of destructive and "system restore" (which I assume is something like windows system restore) the destructive will format the drive and then do the OOB (out of box) recovery.
I just did this yesterday on an hp 7060 mediacenter desktop. I also cloned the drive to another sata drive and ran the non destructive just to see what it would do and it had all the icons but 80% of the programs did not work. The files in "my computer" were still there but another "hp_administrator" account was created so any program that used stuff in "documents and setting" would have required a reinstall.
Ther destructive choice is what you want to create a clean system after a rootkit or trojan problem.
Edited by Ken-in-West-Seattle, 02 February 2010 - 01:22 PM.