How To Fix Windows 2003 acpitabl.dat Problem

Symptoms: Windows 2003 hangs after booting and never reach the login screen.
Background: ACPI stands for Advanced Configuration and Power Interface. It is an open standard that defines platform for hardware discovery, configuration, power management and monitoring.
Possible Cause and Resolution

Cause: CMOS Battery is Dying

Resolution: Goto CMOS setup, scroll to POWER MANAGEMENT SETUP, hit Enter, look at it, Hit ESC to exit, Anwser Y to save.

Source: Win2003 freezes at acpitabl.dat solution
Cause: RAID Problem

Resolution:
Turn off the server.
Unplug one of the hard disk in your RAID.
Boot the server. The RAID status now should change to degraded
You should now be able to see the login screen.
Login, do the necessary backup
Plugin the hard disk, rebuild the RAID array with its software