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If you see the POST error in the picture on your IBM Thinkpad 600X's screen, your BIOS battery is probably dead. BIOS batteries for Thinkpad 600Xs go...
Get a CR2025 lithium watch battery from RadioShack.Remove the dead BIOS battery from the laptop. It lives in a little holder next to the RAM on the b...
With a sharp knife, carefully slice along the edge of the plastic to avoid damaging the contacts.
Carefully unstick the soldered contacts from the BIOS battery. Work around the edges with a knife and then pull off slowly with needle-nose pliers.
Since the battery will be in a tight spot you need to insulate the edges with tape. Keep in mind that the original had a yellow wrapping around it.
Since we are not going to spot solder the contacts to the new battery, we have to make sure that they make consistent contact when taped to it. To do...
Reconnect the battery by carefully plugging in the small white connector. Make sure you have it turned the correct way and do not force it. Then stu...
Put the cover back on the memory bay and power the machine on. You will have to reset the date one final time, but that should be it!
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