Sticky Key is an option that allows you to use ctrl key, shift key, alt key and windows key to without pressing them. To active sticky key option you have to press right shift key continuously five times. Then a box will appear like this. Now click ok to active sticky key   Now a symbol like this will appear on the right side of your start bar. The uppermost box is for shift key, the left box is for ctrl key, middle box is for windows key and the right box is for alt key. Now if you press shift key for one time then the uppermost box will be blocked by black color. It means your shift key is pressed. And now you can get the benefit of shift key without pressing shift key. Press shift key two times to lock this feature. Press right shift key again for five times to deactive sticky key option.