[COMMANDER Gaming Gear Combo Owner's Club]

Hi, I just bought this combo and can't change the dpi of the mouse. I press the button to change dpi as the manual says but it does not change the color of the light. When I hold down the dpi button, it makes the wheel turn the volume up or down. The options according to the manual do not work either. Do I have to download a driver or is the mouse failing? Thanks a lot.