In Windows, you can use themes to help make your desktop feel a little more personal.
High Contrast themes improves readability of the display by applying a special system color scheme.
When you use the + + keyboard shortcut to turn on or off High Contrast, a sound will play by default to let you know.
When you use the + + keyboard shortcut to turn on High Contrast, a warning message will display by default asking you to confirm with Yes or No.
This tutorial will show you how to enable or disable the warning message and sound when turning on high contrast in Windows 7, Windows 8, and Windows 10.
EXAMPLE: High contrast warning message
Enable or Disable High Contrast Warning Message and Sound in Control Panel
Open the Control Panel (icons view), and click/tap on the Ease of Access Center icon.
Click/tap on the Make the computer easier to see link in the Ease of Access Center. (see screenshot below)
Under High Contrast, check (enable - default) or uncheck (disable) Display a warning message when turning a setting on and Make a sound when turning a setting on or off for what you want, and click/tap on OK. (see screenshot below)
It is required to have Turn on or off High Contrast with left ALT + left SHIFT + PRINT SCREEN is pressed checked for the warning message to display and sound to play.
You can now close the Control Panel if you like.
Enable or Disable High Contrast Warning Message and Sound using a REG file
The downloadable .reg files below will modify the string value in the registry key below.
Flags string value (REG_SZ)
4198 = Disable warning message and sound
4206 = Enable warning message and disable sound
4214 = Disable warning message and enable sound
4222 = Enable warning message and sound
Do step 2 (enable message/sound), step 3 (disable message/sound), step 4 (enable message / disable sound), or step 5 (disable message / enable sound) below for what you want.
This is the default setting.
Save the .reg file to your desktop.
Double click/tap on the downloaded .reg file to merge it.
When prompted, click/tap on Run, Yes (UAC), Yes, and OK to approve the merge.
Sign out and sign in, or restart the computer to apply.
You can now delete the downloaded .reg file if you like.