OnePlus one is charging but is recognized in device manager only when in debug mode my oneplus one device (version 4.4.2) is not recognized anymore by the computer (OS WIN8) in the device manager, only when in developer mode - in usb-debug, does it show on the device manager (and even then it is not recognized as a storage device), I have installed the drivers successfully, but the moment the developer mode is turned off it was not recognized again.

Now, I haven't dropped the device and it is protected with a cover, what leads me to believe it may be a software issue. 

I have tried already to format the cache partition, and it did not help.

Please help...
Are you using the red/white cable that came with the device? Most standard USB cables are not capable of file transfer, and so will not be recognized with Windows.