What if there's no sound after reloading the Win7 system?

1, set the sound-related properties, first into the Control panel-voice options, the Playback tab should have the following speakers such devices, double-click the Open Properties window, in the Level tab, to keep the horn-like button for the normal state, as shown in the following figure.

2, the same, if the microphone is not sound, enter the Record tab in the level of a column, keep the sound-like icon for the normal state.

3, check the sound card driver is not a problem, right-click the Start menu's computer options, select Properties, go to Device Manager, and see if there are any items with a yellow or red exclamation mark in the sound, video, and game controllers, and if so, try updating the sound card driver (Download the Driver Wizard to update automatically).

4. Check that the Win7 voice service is disabled, right-click on the computer in the Start menu, select Manage, go to the service option, and find a Windows audio to ensure that it stays in a startup state.

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