Audio plaback on laptop

I wrote simple audio开发者_运维百科 playback application on c++ via latest DirectX SDK. On PC it working fine (Windows xp, Vista, Windows 7), but when I execute application on laptop it produce only silence.

What differnce between audio on PC and laptop?

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This is going to be a hardware setup problem on your laptop. Make sure the laptop has all the latest sound drivers, also check that it isn't muted, etc etc.

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Run DirectX Diagnostisc for check problems with DirectX.

Go to the: Start -> Run -> Type: dxdiag

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Install the latest version of DirectX on the laptop.