Hardrive locked by itself, now has a flahsing blue locked symbol

hey guys,

gave the harddrive to a friend, he puts some movies on it and now when i got it back and plugged it in the computer dosnt even recognise it?

please help

did you ask your friend if he locked it? it could have happend when he was putting movies on it or installed SmartWare its asks you to place a password lock onto an unsecure drive