I started having this problem today. When I connect the phone to my pc, the SD card does not mount. I have tried rebooting the phone, unplugging/plugging the USB from the computer and phone, debugging mode on/off on the phone, and clearing all of the device entries from the Windows registry. The error in event viewer shows: Event id 11: The driver detected a controller error on \Device\Harddisk2\DR 27. Please tell me how to remove this error?