Accessibility

Right Shift for eight seconds: Toggle FilterKeys on and off. FilterKeys must be enabled.
Left Alt + Left Shift + PrintScreen: Toggle High Contrast on and off. High Contrast must be enabled.
Left Alt + Left Shift + NumLock: Toggle MouseKeys on and off. MouseKeys must be enabled.
NumLock for five seconds: Toggle ToggleKeys on and off. ToggleKeys must be enabled.
Shift five times: Toggle StickyKeys on and off. StickyKeys must be enabled.
6.) Microsoft Natural Keyboard with IntelliType Software Installed
Win + L: Log off Windows.
Win + P: Open Print Manager.
Win + C: Open control panel.
Win + V: Open clipboard.
Win + K: Open keyboard properties.
Win + I: Open mouse properties.
Win + A: Open Accessibility properties.
Win + Space: Displays the list of Microsoft IntelliType shortcut keys.
Win + S: Toggle CapsLock on and off.