Hi Katy, Greg is here (an Independent advisor).
This issue might be due to the incompatibility of the latest Windows 10 update and the Audio driver. I recommend that you try performing System Restore using a Bootable USB. Create installation media for Windows.
https://support.microsoft.com/en-us/help/15088/...
Then follow the instructions from the section Use installation media to restore your PC, the article Recovery options in Windows 10