My 5 year old seagate GoFlex Desk external hard drive has malfunctioned. It is not recognized by my windows 7 computer. The white light is on but I can not get the computer to detect it. I have tried rebooting several times, unplugging all cables and when I got to click on start>computer it is not there. Its out of warrentee I would assume so I don't know what I can do to retrieve my data. Can someone help me. Thank you so much.