Hard drive showing up in the BIOS, but not in windows

Jun 9, 2013
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So I booted up my system and my HDD wasnt showing. I then tried disk part, no luck. However the drive is still showing in the BIOS, which seems odd.

Any solutions?

I may add that its a 2TB WD green, and it's been working perfectly for around a year. just, Suddenly it stopped showing in windows. This is my storage drive, and i use an SSD for booting.

(I have tried Disk Management search tool, with no succes)

Is my drive broken, or is there an explanation to all this?
 
Solution
It may have failed. The BIOS will see it if it is physically connected. The OS may not see it if it can't access it. Try unplugging it for a couple boots, then plug it back in. It may need to be "reset".