Portable Usb Harddrive My Portable Harddrive Will Not Show Up On My Computer?

My portable harddrive will not show up on my computer? - portable usb harddrive

I recently purchased a USB 2.0 Portable HDD (160 GB) and whenever you plug into the USB port, it recognizes that something is plugged in, but does not recognize the device. The first time she told me logged in, install the driver, and I tried, but do not come with a CD and using the Windows search does not work correctly. I tried several times, but still does not recognize the device.

Please help me.