My w550i camera has a problem which is common with many.when i go in the menu and click select on the camera a black screen appears instead of camera view and the camera automatically shuts off in about 2 or 3 seconds without showing camera view or anything. can anyone solve this.i don't know if it's software or hardware.I've updated my phone once and flashed it once after WSOD problem. help only if you know the solution exactly.is it a camera driver problem?