Windows 7 - Ease of Access - Keyboard Shortcuts

Keyboard shortcut	Action
Right Shift for eight seconds	Turn Filter Keys on and off
Left Alt+Left Shift+PrtScn (or PrtScn)	Turn High Contrast on or off
Left Alt+Left Shift+Num Lock	Turn Mouse Keys on or off
Shift five times	Turn Sticky Keys on or off
Num Lock for five seconds	Turn Toggle Keys on or off
Windows logo key +U	Open Ease of Access Center.