I got an Aspire just a couple months ago, and love it, except... for the last couple weeks it has had an issue turning on if it is on battery power. the battery is fully charged, but when I either open the ultrabook, or click the power button it will only stay on for a second or two and then immediately goes off. If I plug in the ac adapter it turns on normally, and if I keep trying 5 to 10 times it will eventually do some self-diagnosis / repair process and then stay on, but then next time I try to power up by battery it is back to being difficult. Any ideas diagnosing this would be very appreciated.
Thanks much.