1. After uninstalling all the related driver to your mobile and other mobile, proceed further.
2. Switch off your mobile phone and go to device manager in PC (In window 8.1 right click on my pc or my computer and then select manage, another procedure is from control panel)
3. Connect your mobile to PC in switch off condition and in device manger PORT SECTION your device is detected.You have only 5 second to selecting on your PC(in package driver are given, install acc. to your PC 32/64 bit) so do Hurry.When you are selecting the driver your mobile start charging don't worry select the driver folder.If you have problem in installing driver like digital signature then search google how to disable it and install it.
4. You think that why we are selecting the driver to port section it is because the mobile have only 5 seconds to start charging in off condition.In those 5 seconds if any data is not send to mobile the mobile start itself.