On the Keyboard tab, under ToggleKeys, select the Use ToggleKeys checkbox.A high sound plays when the keys are switched on and a low sound plays when they are switched off. When ToggleKeys is turned on, your computer will provide sound cues when the locking keys (CAPS LOCK, NUM LOCK, or SCROLL LOCK) are pressed. ToggleKeys is designed for people who have a vision impairment or cognitive disabilities. ToggleKeys emits sounds when locking keys such as CAPS LOCK, SCROLL LOCK, and NUM LOCK are pressed. To open the Settings for High Contrast dialog box, open Accessibility Options, click the Display tab, and then, under High Contrast, click Settings. If the Use shortcut checkbox in the Settings for High Contrast dialog box is selected, you can turn High Contrast on or off by pressing the left ALT + left SHIFT + PRINT SCREEN keys (depending on the other settings you have selected in the Accessibility Options dialog box).To open Accessibility Options, click Start, point to Settings, click Control Panel, and then double-click Accessibility Options.To turn off High Contrast, clear the Use High Contrast checkbox. On the Display tab, under High Contrast, select the Use High Contrast checkbox.Open Accessibility Options (see below).Some of the schemes also change font sizes for easier reading. High contrast color schemes can make the screen easier to view for some users by heightening screen contrast with alternative color combinations. High Contrast is designed for people who have vision impairment. High Contrast improves screen contrast with alternative colors and font sizes.

Windows 10 turn off high contrast