Excuse me !,,but...my hard disc doesn't work with Windows 8 system

first I wana thank  to helpe,then my  “my passport Studio” device after I have done of its instuling and downloding  and  all of that , the HDD hasn’t worke( whate I mean is the icon of the WD hasn’t found in “my computer” file) altough the hard disck is working and the led light is run as wall…so pleaaaaaase help me  how to do it now ???

There are several things that you can check.

The drive comes formatted for Mac. If you have not done so, reformat the drive for Windows.

You will need to initialize the drive first. Bare in mind that all data will be erase when you format.

The links bellow will help you:

How to initialize or write a signature to a secondary hard drive or Solid State drive in Windows (8, 7, Vista, XP)

http://wdc.custhelp.com/app/answers/detail/a_id/1018

How to partition and format a WD drive on Windows (8, 7, Vista, XP) and Mac OSX

http://wdc.custhelp.com/app/answers/detail/a_id/3865

WD external drive is not assigned a drive letter by Windows or Mac OSX and data on the drive is inaccessible

http://wdc.custhelp.com/app/answers/detail/a_id/1164