Any software and/or documentation for your Internet service connection.Dell Resource CD/DVD (also available on the Dell Drivers and Downloads page).Dell Operating System Reinstallation CD/DVD.If your computer has more than one hard drive and a RAID configuration installed, refer to your User’s Guide for instructions on how to configure it for reinstallation.If you don’t have an optical drive, you can send in your computer for repair or purchase an optical drive. An optical drive is required to reinstall your operating system using the Windows Vista CD/DVD.Keep in mind that after reinstalling Windows Vista, you will no longer have this option. Going back to factory settings could be a better solution for you. Restoring your computer to its original factory settings takes less time than reinstalling Windows Vista.In certain cases, you may need to manually reinstall Windows Vista operating system on your Dell computer. How to manually reinstall Windows Vista on old DELL computers
