Please update BIOS before loading Windows XP Pro/Home/Tablet. After updated the system BIOS, please remember to load BIOS default as following steps: 1: When power on the unit, press F2 to enter BIOS 2, Press F9 to load BIOS default value and answer Y to confirm 3, Press F10 to save and exit BIOS For Windows XP Pro/Home OS, you need to change the Touch Panel Setting to "Touch Panel" from BIOS. Please follow steps below: 1: When power on the unit, press F2 to enter BIOS 2: From BIOS menu -> Advanced -> Miscellaneous Configurations -> Touch Panel Setting change to "Touch Panel" 3: Press F10 to save and exit BIOS 4, Restart your unit and continue Windows XP Pro/Home installation. * For Windows XP Tablet OS , keep the Touch Panel setting to "Tablet"