Please help.. my passport does not detected on my mac after passcode unlock

my passport does not detected on my mac after passcode unlock…

also i can hear some clicking sound from my drive, only the moment i write my password. 

and it still makes little usual noise just as when it worked good.

i havent done anything recently with my driver. i dropped my drive long ago but it still worked very fine until yesterday. 

i really cant figure out what is happening to mine… and i urgently need files inside.

Welcome to the Community.

A clicking sound is a sign of insufficient power. Did you replace the USB cable?

i did try… and it still worked the same and also in my friend’s mac.

now there is a little progress? that finally my file showed on my desktop… but it appears as 0KB 

I’d recommend not using the hard drive any longer to prevent further damage to your data and instead contacting a specialized data recovery service.

http://support.wdc.com/recovery/index.asp?wdc_lang=en