This article was previously published under Q283079
If an unattended Microsoft Windows XP or Windows Server 2003 installation occurs in a factory environment during which there is no mouse or keyboard attached to the computer, when the computer is in mini-Setup with a PS/2 mouse and keyboard attached, neither device works.
This problem only occurs on computers that have an ACPI compliant BIOS. Computers that have no BIOS settings, or that have auto-detect settings for the PS/2 port are prone to this issue.
To work around this problem, you must force the mouse and keyboard to be reinitialized during mini-Setup. To do so, add the following lines to the [SysprepMassStorage] section of the Sysprep.inf file before the unattended installation begins: