Win7 keypad NumLock key fails to do?

As we all know, the computer keyboard numlock keys are used to turn on and off the computer keypad, but sometimes this key will be ineffective, no matter how the use of the press, many people may think is not the keyboard of the computer is broken, in fact, in most cases, the Win7 system is set up a problem, We just need to make a simple adjustment to return to normal ...

1, first, we click on the lower left corner of the computer "start", and then you can see the system to run the dialog box, such as the figure, or hold down the shortcut key win+r, and then you can also cut out the Run dialog box

2, then we enter "OSK" in the input box, click OK will eject the system virtual keyboard, the following figure

3, we find "options" in the lower right of the keyboard, and then click

4, and then there will be another "Options" dialog window, we notice that at this time "open numeric keypad" is not checked

5, this time will be the click of the check, and then determine the exit, the virtual keyboard at the bottom right corner of the NumLock key to light up, this time general problems can be solved, of course, keyboard hardware is not the case of the exception