Wd 3TB problem

hi … i have the 3 TB caviar green it work good but when i make copy and paste it hanging and all my p.c hang :frowning: i do format but still this problem
i have windows 7 … core i7 … 16 GB ram

Hello, use DLG to test the HDD.

http://wdc.custhelp.com/app/answers/detail/a_id/940/session/L3RpbWUvMTMzMzU1MTUzMC9zaWQvOXZ6SHlPVWs%3D