Getting power-up error 0163 and 0173 on an IBM Thinkpad 600x.
Started happening today when I rebooted -- it pops these
numbers up, beeps a couple times and jumps into the BIOS
date/time-setting screen.  When I click okay, it boots up
normally.

IBM's support website tells me that 163 =
    1. Set time and date
    2. System board

And 173 =
    1. Select OK in the error screen; then set the time and date.
    2. Backup battery.
    3. System board.

With fingers crossed, and noticing that everything else seems to
work the same, I'm hoping it is just the backup battery.  I've
had this machine for just over a year, and I had got it used, so
it seems like s reasonable conclusion.

Any idea how to go about checking this?  Do I have to pop the
system out to test the battery, or is this something that I
should have a dealer handle for me?

Thanks,
-Neil.

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