Question about IBM ThinkPad A21m 2628 Notebook
Green battery light on but nothing.just black screen.no noise
The BIOS/CMOS backup battery is probably due for replacement; that system has a few years on it and the coin cells are good for maybe 5 years.
If you don't have your original user guide, you can get the maintenance manual here:
It will contain battery replacement info.
Posted on Aug 19, 2008
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Posted on Jan 02, 2017
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