Hey JoJo, you didn't say what model Acer laptop you have, or the operating system you are running. I have an Aspire V5-571G, about 6 months old, and to adjust the sound volume, hold the function key (Fn) down, lefthand side of keyboard, and then press the up/down arrow keys, right hand side of keyboard.That is the basic method. Hope that helps. Oh yes, also check your manual. Most of us don't. lol.