WD4000FYYZ initialization error

it is a new hdd (0 hour),i bought on ebay
hdd sentinel writes health 100% and check short test no problem but when i try initialization error with I/O device failure
What can be wrong?

Hello,

Try running a diagnostic using WD DLG.

Data Lifeguard Diagnostic for Windows

I ran Windlg: SMART status pass Test result pass (quick test)
need extended test?

i dont know what happened but i tried again initialization and now everything is alright i formated the hdd . i tried many times earlier and nothing and now ok so i wait couple of month before i copy data