I did a master reset on my W715. Now it won't start. When I did it the phone shutdown just as it's supposed to do, but it didn't start again. The screen just turned black. I pulled out the battery and put it back again. When I turned it on again I could see the Sony Ericsson start screen. Then the screen turned black again. I should also mention that the screen is lighting black. It is not turned off.
Please help me! I don't know what to do!