Troubleshoot Sound output for Macbook Pro 2009

macbook pro 2009 Sound output choice does not drop down anything but "internal speakers" choice. HDMI cable streams video and no sound. Have swapped out HDMI and it recognizes no sound for either. I think it could be a faulty adaptor for HDMI cable connection? It used to work fine then it stopped working and gave me a planet screen on TV when video was playing fine on computer. I tried again after software updates and a new hard drive and now it streams the video but sound only comes out of internal speakers. Wondering if I could be missing something on my mac before I buy another adaptor.

Another option, if you need a multi-channel sound support is to use a Optical cable like -
http://www.monoprice.com/Product?c_id=102&cp_id=10229&cs_id=1022902&p_id=1557&se q=1&format=2
From MacBook Pro (13-inch, Mid 2009) - Technical Specifications (all the other Macs from 2009 also support optical digital audio).
Audio
Built-in stereo speakers
Built-in omnidirectional microphone
Combined optical digital output/headphone out (user-selectable analog audio line in)
Supports Apple Stereo Headset with microphone

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1. Reset PRAM. http://support.apple.com/kb/PH4405
2. Reset SMC.     http://support.apple.com/kb/HT3964
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http://support.apple.com/kb/HT5369
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Hopefully one of these steps should solve the problem.
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2. Remove the headphone.
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3. Reset SMC.     http://support.apple.com/kb/HT3964
    Choose the method for:
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4. Applications > Utilities > Audio MIDI Setup
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    Click the Built-in Output.
    Under Mute any of the boxes checked? If so, uncheck it.

Troubleshoot Sound output for Macbook Pro 2009

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