Toshiba C660 laptops come installed with Windows 7. However, the company I work for wish to have Windows XP installed at the moment, for consistency. Licenses have been provided. However, having downloaded drivers from the Toshiba website for XP Pro, the mouse driver occasionally freezes and the Atheros wireless driver 'disappears' upon booting into windows. BIOS is current version. There have been 30 laptops imaged and most are having this problem. Its becoming desperate, any advice much appreciated.