Please try this: home screen > menu > settings > applications > development > USB debugging should be unchecked, in fact all three items can be unchecked in the development menu. Unplug the USB cable from the phone and the computer. Turn the phone off and remove the battery for a few seconds, replace the battery and turn the phone back on - reboot the computer, plug the USB cable into the computer and then into the phone. And then just be sure to follow the process as per the user guide: Let us know what you find out please!
Connecting Your Device to Your Computer
Before using your device’s mass storage capabilities, you need to prepare your device’s data services to synchronize with your desktop or laptop computer.
Once you have connected the device to the computer, you can transfer your data to or from the microSD card.
Before You Begin
Here is what you will need to have before you can successfully establish a connection between your Samsung Replenish and PC.
To remove the connection: