New hard drive still won't be recognized!

Hello, recently I've been having several problems with my mid-2009 MacBook Pro; 2 minute beachballs and failure to startup. So I've purchased a new new WD Scorpio Black thinking it was a HD issue, but after replacing my old HD with the WD, Disk Utility wouldn't recognize the new drive. So I searched around and found out that Hard Drive Cable failure is an issue on this certain MacBook. So I ordered a new Hard Drive cable and just replaced that today, thinking that my new HD would be recognized. However after going into Disk Utility via the OS X Install DVD, my new Hard Drive was still not recognized. So I put back my old stock HD and it was recognized instantly and seems to not have any issues anymore. Could it be that the drive is DoA? Or should I purchase an external enclosure and format my new hard drive that way? I'd appreciate any other suggestions, thanks!

Try system preferences, utilities and open disk utilites, click on HD your disc (what ever you named it, or if you did not ,the 2nd disc id down is your disc) click disc repairs, if the reponse is this disc has problems click disc repair. If this doesn't work re-post and some one will walk you thru this .

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    enigmatix wrote:
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