You should have a user guide on your hard drive that tells you how to do this. If you've deleted it, you can go to the HP web site and download a copy. If you want a DVD/CD drive, you can buy external ones for around $30 at most places that sell computers.
I have an HP Mini netbook computer running windos xp. It was a mistake to begin with since it does not have a CD ROM Drive.
It has been running awful slowly lately and I came to found out the Hard drive is completely full (140/ 140 GBs). I tried to run system restore but it needs 200 mb to operate and this is not available. I have already transfered all of my photo files and everything important on to an external HD. I'd like to completely reboot the system back to the factory settings but can't seem to figure out how. Any help would be greatly appreciated.