Hello **** Jess,
Thank you for updating us with the status of the issue. We apologies for the delay in responding.
I suggest you to follow the below methods to see if it helps,
Method 1: Hardware and Devices Troubleshooter.
Run the Hardware and Devices Troubleshooter: - This troubleshooter is an automated Windows 8 inbuilt tool which finds and fixes the common issues with the Hardware and Devices on the computer. Perform the below steps to run this tool and check if that helps.
- Press “Windows Logo” + “X” keys together and select Control Panel from the list.
- Type “Troubleshooting” in the search bar and press “Enter”.
- In the “Troubleshooting” window, click on “View All” on the left pane.
- Click on “Hardware and Devices”.
- Click on “Advanced” and then click on “Run as Administrator”.
- Click “Next” and follow the on-screen instructions to complete the troubleshooting process.
Note: If the issue still persist, proceed with Method 2.
Method 2 : Uninstall and Reinstall the latest sound driver.
Step 1: Uninstall the sound driver.
Please follow the below steps to uninstall the sound card drives from Device Manager and check the issue,
- Press Windows logo + R keys together to get the Run option.
- Type devmgmt.msc.
- Expand sound, video and game controllers.
- Right click on the audio driver.
- Click uninstall Drivers button.
- Click on OK button.
- Restart the computer.
Step 2: Reinstall the latest audio driver.
I suggest you to follow the below link and install the latest Audio drivers which are failing under the manufacturer's website and check the issue.
http://www.asus.com/in/Notebooks_Ultrabooks/ASUS_VivoBook_S300CA/HelpDesk_Download/
Additional Information: Connect a microphone, music player, or other audio device to your computer
http://windows.microsoft.com/en-us/windows/connect-audio-device#1TC=windows-7
Hope the above information was helpful, kindly get back to us if you need any further assistance.