Get a new IDE cable?
Also check the another drive on the same IDE channel on the motherboard, and check the drive on another motherboard. Those three steps should isolate the problem. My money's on either the cable or the drive, most likely the cable.
Hope this helps,
i5-4670 | Asus H87M-E | MSI GTX 960 | 8GB DDR3 @800 | WD Green 2TB | Agility 3 120GB | Unicomp Customiser 105 | Logitech MX518 | Hyper 212 Evo | 6TB homebrew NAS
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