Would like to install xp on latitude c400 but cannot change the boot order. Up and down work, enable and disable work, there is no primary password, no admin password, no hdd password. Setup is accessed with FN-F1 and appears normal. The boot order will not respond. There is external DVD-CD which would be sweet but the boot order is FDD, HDD, CDD. It boots into HDD and won't look for any other. How does one xp?