The recovery partition might still be accessible, turn on the system and hit the recovery key, I think it's F11, but check the manual.
Then HP recovery manager will open up. From here, it should have the option of creating a set of recovery disc.
If not, then restore the system using the HP recovery, this will wipe all data on the drive and set it back to factory defaults. Look in All Programs for HP recovery or start menu search HP recovery.
Launch the HP Recovery manager and then click create a set of recovery disc.