Problems with My Passport Essential SE

Hello

i was transfering files from old to new mac with external drive My Passport Essential SE. I did this several times (cleaned trash and copied other files). Than I have noticed a problem. I cant axcess my content on external drive.

1. I have pluged drive into comp, enter password but pass window just shaked. I was typing the right pass but no luck. External drive was not visible in finder

2. I varified disk with disk utility. The partition map appears to be ok. Disk status is online, used 999,83 GB, Available 0 Bytes

2. I have contacted wd support, download Smartware http://www.wd.com/wdproducts/wdsmartwareupdate/wdsmartware.asp?id=wdfMP30_SEEsse ntial&os=mac,

3. I have set new password and then removed the security. But drive still doesn’t appear in mac finder. I have also run all three diagnostic with no problem. When i plug drive I still get pass window and the same problem as in the beginning.

4. I have installed software data rescue 3 and several others. I have chosen deep scan and i got msg after few minutes that scan was suspended because the scaned drive disconnected.

Can anyone help me please how to get my data from disk? Thank you!