Hello. I'm getting an error message about the date and time not being stored on a Dell Latitude D800 laptop. As a first attempt to alleviate this problem I am going to replace the CMOS battery. I opened the covers on the bottom of the laptop but don't see the battery. I tried to take the shell off but haven't been successful yet. Before I go further do you know if the CMOS battery is soldered to the motherboard? (If so, this may be a nonstarter for me.) Thanks for your help!