If you are wanting to restore the HP Pavilion DV4-1225dx back to Factory Settings, you should be able to do this with a recovery kit. If you do not have this available you may be able to get one at a local computer store or possibly even have them assist you with it for a low price. Another option may be to reset it back through the computer without the disk if it will let you. Some will let you do it that way while others will not. Good luck.