Hi...I had been struggling with this for the last coupla days, and went through a lot of posts on a lot of forums...even called up the nearby stores to compare new Dell adapter prices...then decided to try a couple of things all at once- so, not sure which one did the trick ;). Yes, ladies and gentlemen- my inspironbattery is now charging...the led display tells me this, and the battery icon mouseover confirms it...for anyone else it could possibly help, here's what I did.
I had earlier tried uninstalling the Microsoft ACPI-compliant control component, then removing the battery and scanning for hardware changes to automatically install MS ACPI again etc- didn't work. This time, I removed the battery again after I powered off the notebook, removed all visible dust, blew into the cavity too, for extra measure. Then detached the cable from the powerboard- I could see the inner wire bunch because of the "warped" rubber cylinder-like cover ( don't know the technical term for this). This I taped together with some packing tape that I had on hand (electrical or scotch should work fine too), twisted the cylinder back into position, connected the cables, inserted the battery back into the cavity, and powered on the laptop (and held my breath, sorta). When I saw the battery led light up I grinned, when I didn't get any "Adapter not recognized) message, I grinned wider, and when I saw the battery icon said "plugged in, charging", I allowed myself to whoop! :)
Just hunted down this forum, because it had pretty recent posts...hope this bails out somebody of their misery and anguish :)
Rupika, December 2011