When Shenzhou Elegant A550-i7 installs Windows XP system, you need to operate as follows:

1. Enter the BIOS, find the Advance option, find the AHCI option, and change the option value to IDE.

　2. Find the Boot option, find the Boot Priority option, press Enter to enter, use F5 and F6 to adjust the startup sequence, set the hard disk as the first boot device, and then F10 to save and exit.

3. After booting, press F12 to enter the Boot menu and select the CD-ROM drive to start the installation normally.