Scroll down a bit.
Look for the similar label on the outside of your computer.
Quote the specific model number - that's at the end of the first line.
Quote the Product number - that's on the third line.
"someone deleted entire comp"
Not likely, unless you know someone who said they did.
"would not boot at all."
Going by your description, the computer itself is booting, it's just NOT loading Windows properly. The computer not booting at all is a completely different situation.
"I installed a dos xp floppy that was originally installed but now all I get is operating system not found."
"tryed booting with CD for win. 7 All with no progress."
The Boot Order or similar settings must be correct in the bios Setup.
Floppy drive or similar first, at the top.
Then CD drive or similar.
Then Hard drive or similar.
You DO NOT want Network boot or similar to listed in the boot order unless it is listed AFTER Hard drive or similar, unless you normally boot the computer from an institutional or business network.
If Network boot or similar is listed AFTER Hard drive or similar but there is a problem with the hard drive or the hard drive's data connection, the bios will attempt to boot from a network if no floppy disk or no bootable CD or DVD is in a drive.
If you got a floppy with the system, or if you made a bootable floppy in XP, it's probably a Windows ME bootable disk.It's not all that useful.
If you rarely use the floppy drive, the heads in it may be "dirty".Use a head cleaning floppy in the drive if you have one, or just keep trying - the floppy spinning will eventually wipe off the heads after the floppy has been inserted and ejected many times.
If the Windows 7 disk is bootable, it may be a CD or a DVD. Can your drive read DVDs ? It's of no use if you want to install XP, if you even need to.
In any case, you usually can't install Windows using a CD or DVD that came with a brand name system computer unless the computer is the same brand name and is the same model or one of a small group of models the disk was intended for.
Try cleaning the laser lens on the optical drive with a laser lens cleaning CD. If you don't have one, most places that sell CDs or DVDs have them - even some "dollar" stores have them for a buck or two.
For a laptop or netbook, it's usually easy to clean the laser lens with a tissue or a soft clean cloth when the optical drive's tray is ejected and has no disk on it.
If you have two or more optical drives, try the disk(s) in another optical drive.
However, many bioses will only boot from a bootable disk in one optical drive. If a bootable disk is not recognized while booting, go into the bios Setup and find the list of optical drives - it's often near the Boot Order or similar settings - the drive you want to boot a bootable disk from must be first in the list, Save bios settings.
"I also received no recovery disk when I purchased my comp new.original win. XP Home Edition"
If you really do need to re-load Windows, which may not be your situation at all, not having a Recovery CD set is not a big problem.....
- you may still be able to order a Recovery CD set from the HP web site for a reasonable fee.If that's available there is a listing for those in the Software downloads for your specific model on the HP web site.
- if not,there are a few sites on the web that collect the Recovery CDs for brand name computers and they may have a set you can download on another computer for a reasonable fee.
OR - if you can borrow a suitable XP CD from someone you know, you could use that. The Product Key on the official Microsoft label on the outside of your case can be used with a regular Microsoft OEM XP CD of the same version, Home or Pro, as on the label.
A regular Microsoft OEM XP CD has "For distribution with a new PC only." printed on it, and has the Microsoft holograms on it.
OR you could buy a new Microsoft OEM XP Home CD with SP3 updates, the cheapest way to buy XP, but you can buy an OEM one for Windows 7 for not much more (your computer would have to meet minimum hardware requirements for Windows7).