I've already reinstalled Windows once because of this issue. This time I reinstalled, I installed all my drivers, restarted my computer, then found that the drive was no longer recognized by the computer as drive D, and instead my blu-ray player has taken D's place. I've had so many problems installing this new drive and reinstalling Windows, and I just want my computer to work Please help. The hard drive that's not working happens to be a WD Scorpio Black 500GB. The one I'm using as my primary drive is a Crucial M4 256GB SSD.