Install sound speaker and audio hardwear

after upgrade from window vista to window 7 suddenly my PC sound speaker not working and no sound i try to do something problem still no changing until now,please help me to get the laptop model DELL INSPRIRON 1420.
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More about install sound speaker audio hardwear
  1. This will take you to your computer's drivers...
    The choices should be obvious for your computer.
  2. Nordin52,

    Gandalf is correct -- you should check the drivers you have installed. When you go into Device Manager, what do you see under audio devices?

    Microsoft Windows Client Team
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Drivers Speakers Audio Windows Vista Windows 7