Succesfully rooted my S3 with Kingoroot app from playstore. I then downloaded Rom Manager to download and install custom recovery Clockworkmod. It correctly detected my make and model for a compatible flash file. It downloaded and flashed succesfully and asked to reboot into recovery. My phone switched off and a Android logo came up with text saying "Downloading... Do not turn off target" Its been on this screen the whole day. Not sure what my next best move should be or why this happend... any help please.