Hi,
After power electric was cut one PC had 2054 as year and the user coldn´t log in the domain because of this (month and day were right). I have changed the CMOS battery to check if I shut down the computer the year is the same but it is 2002 (and it changes month and day). Is posible that when there is a electrical power outage the BIOS reset only the year to 2054 because the month and the day were right?. What kind of CMOS does this?