What should I do if there is no sound after reinstalling Win7 system

1. Set the sound related properties, first enter the control panel —— sound option, there should be a device like speaker under the play tab, double click to open the property window, at the level option In the card, keep the speaker-like button in a normal state, as shown in the figure below.

2. Similarly, if there is no sound in the microphone, enter the level column in the recording tab and keep the sound icon in the normal state.

3. Check if there is a problem with the sound card driver. Right click on the computer option in the Start menu, select Properties, go to the Device Manager and check if the sound, video and game controllers are yellow or red. Exclamation point item, if ever, please try to update the sound card driver (downloadable driver wizard automatically updates).

4. Check if Win7's voice service is disabled. Right click on the computer item in the Start menu, select Manage, enter the service option, and find the Windows Audio item to ensure it remains enabled.