High Contrast Themes in Windows are useful for those computer users who have an eye-sight disability, since they heighten the color contrast of text, windows borders, and images on your screen, to make them more visible and easier to read and identify. When they are turned on or off, a warning message and sound is heard.

Enable or Disable High Contrast Warning Message & Sound

You can enable or disable high contrast theme’s warning message and sound using two different methods: Let us see both methods in details:

1] Through Control Panel

To enable the high contrast warning message and sound, follow these steps: Let’s now see them in detail.

First of all, open the Control Panel. To do this, click on the Start button, type Control Panel, and select the result from the top of the list. In the Control Panel window, make sure the View is set to the Category. Then click on Ease of Access > Ease of Access Centre. On the next page, click on the link saying Make the computer easier to see. Under the High Contrast section, check the checkbox next to the Display a warning message when turning a setting on. After that, check the box saying Make a sound when turning a setting on or off. Also, make sure to mark the “Turn on or off High Contrast with left ALT + left SHIFT + PRINT SCREEN is pressed” checkbox. Now click Apply > OK to save the changes you have made. Once you complete the instructions, close the window and you’re done. If you want to disable the high contrast message and sound, then simply uncheck both boxes saying:

Display a warning message when turning a setting onMake a sound when turning a setting on or off.

2] Using the Registry Editor

The second method you can use the Registry Editor app to enable or disable high contrast message and sound on your device:

To get it started, open the Registry Editor app first. In the Registry Editor window, go to the following Registry key: Go to the right pane and double-click on the Flags (REG_SZ) string. Set the value data according to your preferences:

4222 = Enable warning message and sound4206 = Enable warning message and disable sound4198 = Disable warning message and sound4214 = Disable warning message and enable sound

Once you set your preferences, restart your computer to take effect the changes. Hope this helps.