QUESTION My Windows 7 PC plays audio through headphones but is unable to pick up sound from them. I’ve got a Creative SoundBlaster X-Fi card and a Logitech USB phone/microphone. The drivers are up to date. Alex

HELPROOM ANSWER You need to initialise the microphone. Go to Control Panel, Sound and click on the Recording tab. Ensure that the microphone is set as the default device by right-clicking it and selecting 'Set as default device'.

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