I have a 2645 IBM Think Pad and I need to know where and how to get to the Cmos battery to change it. I have been getting the errors 00161 & 00163 at start up.
Which is exactly why I suggested that the OP Read The * Manual before poking around.
t, May 2007
the battery should be somewhere on the main board most computers use a cr2032 battery which is a round flat battery be careful how you get it out it might be very costly to repair
computer repairs, May 2007
f you go to www.lenovo.com (Lenovo own all of IBM's PC assets now) you can download a manual.