How to solve the problem with the Win7 system laptop?

1. Check the hardware problem and troubleshoot connection errors and hardware damage.

2. To eliminate hardware problems, consider whether the system lacks a sound card driver. Right click on the computer and select Properties. Enter the computer properties.

3. In the property page, click on the Device Manager option on the left. as the picture shows.

4. In the Device Manager, all the hardware of the computer is listed, including the sound card driver information in the sound video and game controller options. Click on the small triangle in front with your mouse.

5. If a yellow question mark appears inside, the system lacks a sound card driver, you need to download and install the driver to make the computer sound.

6. download a universal sound card driver, reboot after installation can resume normal voice.