When I plug my phone into the PC via USB, the PC isn't recognizing it. Under the 'Settings' option and 'SD Card,' it has "MOUNT" in greyed out letters. When I unplug it, it says "UNMOUNT" and I am able to click it. If I do so, it says that it is in the process of unmounting. When the screen goes black or if I click into something else, it just goes back to me being able to click it. Is there any easy way to fix something like this? I'm brand spankin' new to these.