HD Tach - Raptor wont complete Sequential Read Test

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Okay so my raptor drive manages to run the HDTach test up to the Sequential Read test then after about 6 bars of the progress bar are shown i get the message:

"Error during test or test cancelled by user"

I hear the raptor working and then it stops before this message appears.
Any ideas?
Faulty hard drive?

 

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Okay so I ran the Western Digital Diagnostics Tool and it came back with this:

Will OC give me an RMA on this on this basis? The Hard Drive is 1 day old.

 

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RMA is all set up now, shall be returning the drive tomorrow.

 

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Well a new drive arrived this morning, not had a chance to install it yet, will do it tomorrow and hope this one is okay