Hi. I have a 2t WD external harddrive and it was working perfect until i plug it into my pc and it gave me the (one of the usb malfunctioned)error,so i try it on my laptop and got the same error message.I used it on my Blu Ray player as well and it worked perfect,and now the Blu Ray player doesn't pick it up either.I have tried all the possible situations to get it to work but it doesn't.However when uninstall the driver and reinstall.it say unknown drivers installed.but it doesn't show up in my computer or under disk management. Pleeeeze guy any help to get working properly again without losing any of my data