[. . . ] To help reduce the possibility of data loss, back up your important files to external storage media, such as an external hard disk, CD or DVD, or USB flash drive. [. . . ] Step 1: Installing a clean copy of Windows Vista If you install a clean copy of Windows Vista, your existing Windows XP operating system will be replaced automatically. You will also need to reinstall all existing programs after Windows Vista installation is complete. Press the <F9> key when the BenQ logo appears on the screen during system startup. Use < > or < > to select CD-ROM/DVD-ROM, and then press the <Enter> key. Press any key when you are prompted with Press any key to boot from CD or DVD. Follow the remaining on-screen instructions to complete the installation. When finished, proceed to Step 2 below immediately before restarting your system. This will permanently remove all programs and data on the C: drive where Windows XP is currently installed. [. . . ] "Press any key to boot from CD or DVD" ( CD DVD ) Windows 7. [. . . ]