Some users will meet with a problem when turning on the System sound as below. The reason why you meet with this problem is that your Screen Recorder Audio Driver hasn't installed successfully. Here you need to install Audio Driver on TuneFab Screen Recorder for Mac to fix this problem. Now please kindly follow the step below to install the Audio Driver of TuneFab Screen Recorder.
Step 1. Run TuneFab Screen Recorder for Mac.
Step 2. Click on Video Recorder or Audio Recorder to enter the recorder mode. Both methods are feasible for you to remove Audio Driver.
Step 3. Click on the Gear button on both Video Recorder and Audio Recorder. Then you will enter the Preferences Page.
Step 4. On the Preference Page, click on Output and then click on About Audio Driver. Here a pop-up Windows will appear. Then click on Install to install Audio Driver of TuneFab Screen Recorder.
Step 5. Now enter the password of MacBook and then wait for several seconds then the Audio Driver of TuneFab Screen Recorder for Mac will successfully be installed.
Related Reading: How to Uninstall Audio Driver of TuneFab Screen Recorder for Mac?