My seagate backup plus is not getting detected. I still see it in device manager though, but not in disk manager. Also, the LED light is switched off, but when I remove the led from the main portion, it starts blinking again if attached to the USB port. I tried using a different cable, no luck there. Tried using it on other usb ports, still won't work (my flashdrive works fine on these ports) Have I lost all my data?