Hi ZenithNeeraj,
Please check if the charging port on the laptop is loose. Connect an alternate AC Adapter to see if that works fine with the system. Alternatively, try the steps mentioned below:
Reset BIOS to defaults:
- Restart the computer, tap 'F2' key on Dell logo 4-5 times
- This will take you to the main screen of BIOS
- Press ‘F9’ key once, highlight ‘Yes’, press ‘Enter’
- Press ‘F10’ key once, highlight ‘Yes’, press ‘Enter’
You have mentioned that the changer is detected in BIOS. Is it showing 65W / 90W / 130W?
Please reply with the findings.