i have a sony vaio laptop - vpceb390x, original battery gone bad. got a replacement from ebay. boot up with ac, plug in battery, battery light blinks orange constantly., but saids battery has 59% remove ac, laptop turn off,
solution, i had to reset the bios by removing the laptop bottom cover and pull the bios battery (green battery) and plug the bios battery back in. remove ac, put in replacement battery, the laptop booted up!!