I have a sony ericsson xperia arc s, last week i turned it off, and had problems returning it on again. I seem to have the same problem everytime it turns off.. It shows me the sony sign, and xperia sign and it flashes and then the screen becomes black and the sony and xperia signs come again for many times, i spend around 15 minutes trying to turn it on and it is really annoying me, can you please help me?