1TB external HD not working?

[benji21]

Hey guys..

I just bought an external Western Digital 1TB hard drive, I have just done the unboxing and plugged it straight in and now I get the following error when I plug it in.

I also cannot see the HD anywhere?

Any help would be great. Thank you!

 

[lentini]

Format it in Disk Utility

 

[benji21]

Format it in Disk Utility

Working.

Thank you!