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Take out the battery,put it back in:
http://userguide.sonymobile.com/referrer.php?region=gb&product=xperia-e-dual#!Assembly.html
Charge it again.
I have now seen your other topic in L section,what phone do you have?
Force restart(powe button+vol up until the phone vibrates).See if the same occurs.
So now it is ok?