i plugged my memorex mmp8585 into my computers usb and right after i did it said "Ok to remove" reading and its been like that for hours and i don't want to unplug it cause i though that my player would be messed up. its charged and everything but my computer can't find it, i tried looking in the folder my computer and it doesn't show my mp3 player. should i unplug it or do something else