I'm connecting the hard drive into the USB conecttion, the light if the hard drive is on, but there is no new device in My Computer and I can't reach to it. thank you for helping

You can copy files off your old hard drive (if it still working). Remove the hard drive from the computer and attach it to an USB hard drive adapter then plug the USB hard drive adapter and hard drive into an USB port of a working computer.
The computer will detect the USB adapter/hard drive as an external storage device (if the hard drive is OK), you can then open the various folders and files to copy and or backup your data.
After you have installed Windows on your new hard drive then you can copy your files/data onto your new hard drive/computer.

The easiest way is to connect the old hard drive to an USB adapter case and make it an USB external hard drive. Connect this to the USB port on your new computer, the computer will see the external hard drive as an External storage device. You can then open the various folder on the hard drive and copy the files to your new computer.
You can delete all the unnecessary folders and files off the old hard drive and use it as a backup storage device.

An external storage-device has four major components:

* the USB cable

* the power-adapter

* the disk-drive inside the enclosure

* the USB-to-disk-drive adapter inside the enclosure.

One of these components has failed.

Try a different USB cable.

Try connecting to a different USB port on your computer.

Try connecting to a USB port on a different computer.

Take a "multi-meter" and measure both the voltage and amperage output from the AC adapter, and compare with the specifications on the label on the adapter.

Open the enclosure, and remove the disk-drive, and then connect it as a "slave" disk-drive in a desktop computer, to see if it works at all.

Purchase a new, compatible, disk-drive, and install it in the enclosure, to "revive" your external storage device.

Get the part-number and serial-number from the label on your disk-drive, and access the manufacturer's web-site, and use "check warranty status", to see if they will replace the device, at minimal cost to you.

Note that W.D. has a "Customer Loyalty" program -- you can buy a new W.D. device, through the W.D. web-site, at a significant discount.

There exist commercial "data recovery" services that can try to repair your device, just long-enough to rescue and copy your files. For example, see: https://services.seagate.com/index.aspx?lng=en-US for a "no data - no charge" guarantee.

An external storage-device has four major components:

* the USB cable

* the power-adapter

* the disk-drive inside the enclosure

* the USB-to-disk-drive adapter inside the enclosure.

One of these components has failed.

Try a different USB cable.

Try connecting to a different USB port on your computer.

Try connecting to a USB port on a different computer.

Take a "multi-meter" and measure both the voltage and amperage output from the AC adapter, and compare with the specifications on the label on the adapter.

Open the enclosure, and remove the disk-drive, and then connect it as a "slave" disk-drive in a desktop computer, to see if it works at all.

Purchase a new, compatible, disk-drive, and install it in the enclosure, to "revive" your external storage device.

Get the part-number and serial-number from the label on your disk-drive, and access the manufacturer's web-site, and use "check warranty status", to see if they will replace the device, at minimal cost to you.

There exist commercial "data recovery" services that can try to repair your device, just long-enough to rescue and copy your files.
For example, see: https://services.seagate.com/index.aspx?lng=en-US for a "no data - no charge guarantee".

An external storage-device has four major components:

* the USB cable

* the power-adapter

* the disk-drive inside the enclosure

* the USB-to-disk-drive adapter inside the enclosure.

One of these components has failed.

Try a different USB cable.

Try connecting to a different USB port on your computer.

Try connecting to a USB port on a different computer.

Take a "multi-meter" and measure both the voltage and amperage output from the AC adapter, and compare with the specifications on the label on the adapter.

Open the enclosure, and remove the disk-drive, and then connect it as a "slave" disk-drive in a desktop computer, to see if it works at all.

Purchase a new, compatible, disk-drive, and install it in the enclosure, to "revive" your external storage device.

Get the part-number and serial-number from the label on your disk-drive, and access the manufacturer's web-site, and use "check warranty status", to see if they will replace the device, at minimal cost to you.

Note that W.D. has a "Customer Loyalty" program -- you can buy a new W.D. device, through the W.D. web-site, at a significant discount.

An external storage-device has four major components:

* the USB cable

* the power-adapter

* the disk-drive inside the enclosure

* the USB-to-disk-drive adapter inside the enclosure.

One of these components has failed.

Try a different USB cable.

Try connecting to a different USB port on your computer.

Try connecting to a USB port on a different computer.

Take a "multi-meter" and measure both the voltage and amperage output from the AC adapter, and compare with the specifications on the label on the adapter.

Open the enclosure, and remove the disk-drive, and then connect it as a "slave" disk-drive in a desktop computer, to see if it works at all.

Purchase a new, compatible, disk-drive, and install it in the enclosure, to "revive" your external storage device.

Get the part-number and serial-number from the label on your disk-drive, and access the manufacturer's web-site, and use "check warranty status", to see if they will replace the device, at minimal cost to you.

An external file-storage device has 4 major components:

* a USB cable,

* an "internal" disk-drive, inside the enclosure,

* a USB-to-disk-drive adapter, inside the enclosure,

* an external power-supply.

Try a different USB cable.
Try connecting the device to a different USB port on your computer.
Try connecting the device to a different computer.

Take a multi-meter, and measure the actual voltage & amperage outputs from the power-supply, and compare to the specifications on the label on the power-supply.

Open the enclosure. Remove the disk-drive. Connect the disk-drive as a "slave" disk-drive in a desktop computer, to see if bypassing that USB-to-disk-drive adapter bypasses the problem.

Search online for a professional "data recovery service". For a significant fee, they can repair the disk-drive just long-enough to read your 2GB of data, and copy the files either to a new disk-drive, or to burn the files to a few CD-R disks or to one DVD-writable disk.

The light signals a connection between the hard disk inside the Traveldrive to its case. If it fails that means that the hard disk is dead. The unit has died, junk it and buy a new one, hard disks can't be repaired.

First you need to do it try and connect to some other system.

Second My computer ->properties->manage->disk management->if your drive is visible there or not.

Third My computer ->properties>hardware -> Device manager ->Uninstall all USB controllers at the bottom and connect your device and restart.

Fourth - Download TweakUi power toy software from Microsoft and locate your drive letter.

Enjoy

Please rate this fixya

try it again, after going to wd dot com, and getting and installing a new set of drivers..