1
The best first option would be to go to the support page for your PC on the manufacturers website, then from there, download and reinstall (not update) the version of HD Audio drivers and Graphics drivers they provide for your PC model.
If you have any difficulty locating that support page, click your Start Button, then just type msinfo and press Enter, please provide a screenshot of the resulting System Information window.
2
Also, open the old Control Panel
Set View at the top of the old Control Panel to large icons.
Open the Sound applet.
Select your speakers and click Advanced.
On the resulting dialog, select each available tab and disable any sound enhancements set on your audio.