WD Caviar Black 1TB HD tune test C5 C7 error

Hi

I just bought a WD Caviar Black 1TB about 1 month only.

Today i use the HT tune 4.60 to test the harddisk. IT shows C5 C7 warning.

I know that C7 may cause by SATA cable. And i changed a new cable.But C5 is about bad sactors.SO i raise a error scaning and found around 900MB bad sectors.

I think it’s a very serious issue.Is it acceptable ?  Do i need to get replacement?

WD Caviar Black.JPG error scaning.JPG

I’d replace it if I were you…