Hello, i am using hp laptop , when i am using usb port and using to gtalk it is working only five minutes after that no voice will be hearing , i calked the sound volume also, if pressing sound card also no voice is coming
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Unfortunately we can't do much for laptops, the best thing I can suggest for you is to uninstall the drivers and reinstall them for the microphone.
If you are inadvertently in record mode, recording the voice, audio files are huge. This may be filling up the storage space and stopping any further voice/audio.