@SU ROOT...tried connecting phone normally to usb,,says doesnt recognize the device...device not recognize..but one thing unusual happened..i left it connected to usb ,my phone,,then suddenly the phone booted normally,,,but its out of service,,meaning got my simcard in,,but wont connect to my network provider,,,and i went to storage and sd,,its says unavailable ,,when i check the sd card,,on settings,,,pls.insert an sd card ,,but the sd card is inserted,,,,tried a new sd card ,,its the same error,,its seems that the sd card is ok,,,there might be a problem with the usb connection on the phone,,or problem mounting in the sd card,,,thanks,,,anybody encountering this problem like mine,,who found a solution,,kindly posts ,,pls,,,,thanks,,,