Large capacity harddrive wont show in my computer

[Qwertyuiop_30]

Im using Win7, I have a large 1TB western digital external harddrive i plug in.. It is recodnized in divises and printers but wont show up in "My Computer"

 

[Hawkeye22]

Run disk management. If it shows up as raw, it needs initialized first. If it shows up as unallocated space, then it needs formatted. Once the drive is assigned a drive letter it will show up under "my computer".

 

[sturm]

Note: If you had data on the drive initializing and formatting will make data retrieval difficult.
If it's a brand new drive then follow Hawkeye22s post.