My external hard drive from Western Digital will not open

Please post your question in the main section of the Western Digital Community if you want to post in English, because this is  the German forum.

To get some help for your problem it is best to contact the WD support

http://support.wdc.com/contact/index.asp?lang=en

or have a look at this Knowledge Base entry 

http://wdc.custhelp.com/app/answers/detail/a_id/1708