Hello E for Excel
Thank you for the suggestions. I tried option 1 - 3 but it didn't helped with the situation. As for option 4, my laptop is actually one of those 2 in 1 laptop/tablet with detachable keyboard and a sealed battery. Anyway, I pried it open and tried to follow the steps in Option 4 as closely as I could but the moment I detached the battery from the main board (while still having the power chord plugged in with power), it will shut down. Hence I wasn't able to fully execute your recommendations in Option 4. I did however tried to uninstall the Microsoft ACPI-Compliant System and let it auto re-install during restart but the problem still persist.
Anyway, I would like to thank you for being a great contributor and for the wonderful suggestion. I appreciate you taking time to help out a total stranger like me. Any other suggestion will be appreciated. At this point, I am 90% convinced this is a software related issue rather than hardware (battery is charging/discharging normally, no sign of bloated physical battery, charging current is quite stable at 1.2amp - 1.5amp.
rgds...KC