my xps m1530 is not detecting battery!!!!!!!!!!!

MY XPS M1530 IS NOT DETECTING ITS BATTERY FROM TODAY ITS WAS NOT CHARGING FROM PAST FEW DAYS I HAVE UPDATED MY BIOS VERSION ALSO ON HEARING AN ARTICLE ABOUT NVEDIA GPU REALTED ISSUE AND ITS FAN SPIN ON HIGH SPEED FOR A MOMENT OF TIME GOES OFF THUS HEATING THE LAPTOP CAN ANYONE GIVE ME THE REASON FOR THE CAUSE AND SOLUTION I SHOULD TAKE...........PLZZZZZZZZ.......... I AM USING IT FROM ABOUT AN YEAR. ITS OVER HEATING AND I HAVE REPAIRED IT WITH AN TECHNICAL SUPPORTER FROM DELL ABOUT AN SPEAKER PROBLEM ITS MAINTENANCE IS GOING SUGGEST AN RELAVENT SOLUTION SOONNNNNNNNNNNNN