I bought an Iomega 1TB Hard drive 2 years ago (2011) (Model No. GDHDU2). I put some data on it straight away. For 1 month after I was able to view and use this data. After this month, the hard drive stopped working; I plug it in to a power supply and connect the USB to my laptop. The blue light comes on, but my laptop (and all the other laptops and PC's I've tried) does not read/register that anything is connected. I tried replacing the USB cable. Regardless, the external hard drive does not show up in either my computer or disk management... Cheers, Aaron