Why the sound keys on my keyboard don't always work?

I use an Acer Aspire 5733Z-4445, and sometimes the volume control keys do not work. I don't think it's the Fn key is because the other buttons like the brightness of the screen still works. What's wrong?

Hello

Check if the keyboard device is enabled in the Device Manager.
a. click Start, type Device Manager in the start search box, and click on it.
b. click keyboard to expand the list of keyboard devices installed on the computer.
c. determine if the keyboard is on or off.
 
d. right-click on the name of the device keyboardand then click on turn on. If the problem persists, then follow step e.
e. right click on the name of the device, select Properties, and then view the message in the device status field. The device status field contains either:
 
A message that contains most troubleshooting for your specific device information.
Or,
A message indicating that the device is functioning properly.

Let us know the State of the question, if the above aid.

Thank you!

Tags: Windows

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