Hi,
Here are some troubleshooting steps that may help.
- First is to uninstall/reinstall the Realtek driver.
- Open Device Manager and uninstall the Realtek sound card driver.
- Once done, download and install the latest sound driver from the manufacturer site of the Motherboard.
- Reboot the PC once the driver has been installed.
- After the reboot do also set your headset as the default Playback device and see if it will work or not.
- If all these will not work uninstall/reinstall the Logitech software as well.
- Open Programs and Features then uninstall anything related to Logitech.
- Next is to download and install the Logitech software again.
- Here's the link:
http://support.logitech.com/en_us/product/g35-surround-sound-headset#download
- Reboot the PC again and see if it solve the problem or not.
- If all these will still not work, last option would be to run System Restore and restore it back to when it was working normally or before the update.
- Here's how to run System Restore:
http://windows.microsoft.com/en-ph/windows-10/windows-10-recovery-options