Inspiron 1545 Keyboard function keys

[churley105]

I can't get the volume keys to work on the function keys (numbers F7, F8, F9). I changed something in my settings. How do I get this function back.

 

[cklaubur]

Is there a key labeled "Fn" anywhere on the keyboard? If so, trying holding that key while pressing F7, F8, or F9.

Casey