When a RunSynchronous
command runs for a long time during the audit mode of an unattended Windows Vista installation, the Windows Vista-based computer may enter a sleep state. In this scenario, if the administrator password is not set, the computer does not resume from sleep automatically. The computer may be permanently locked, and you may have to reinstall the operating system to recover.
This problem occurs if the administrator password is not set and if the computer enters a lower power state, such as sleep or hibernation.
for other considerations.