WD elements 1tb SE portable Hard Drive

Hello,
My wd portable hard drive elements 1tb SE isn't being recognized by the computer. It doesnt display in the My Computer window and i have no access of it at all. In the device manager it displays under " Disk Drives" and says working normally but doesnt appear in Disk Management. The light stays on and doesnt blink. I have tried it on other PCs and with other cords but doesnt help. I am using Windows 7. Guys please help me out here!!