radiologyman wrote:
I dropped 4 TB HDD when it was powered, now it clicks. Tried freezer trick once. Anything else I can try? Thanks
"Freezer trick"??? Oh dear

Nothing else YOU can try unfortunately. If the data is valuable then take/send it to a pro (I mean a specialist in data recovery, NOT just a regular "PC Expert"), otherwise move on and accept the data loss.
Sorry it's not th answer you wanted to hear

_________________
PC Image Data Recovery
http://www.pcimage.co.ukNew!! HDD-PCB.COM for all your PCB and donor HDD requirements!