Re: Is this the correct cmos battery?
Leave the battery out for a few minutes - that is to say, if you didn't wait for a few minutes already. (2-3 minutes should do, but you could wait, say 10 to be sure). If you pull the old one out and put the new one right in, the CMOS doesn't discharge completely, so you should wait a few minutes. That will clear the CMOS, so you would have to go into the BIOS setup and enter the date/time, and the save your changes.