Dont know how to control the volume, i cannot find my manual

Hi there I hope this would help.

1. Press and hold the 'Fn" (function) key, which is in the left corner closest to the space bar on most laptops.
   

2. Press one of the arrow keys printed with a speaker icon. The icon with two or more curves emanating from the speaker image is the volume increase key. The other speaker icon is the volume decrease key.
3. Press the first speaker icon repeatedly to increase the volume. On the laptop keyboard, this icon will be printed either on the up or right arrow key. Decrease the volume by pressing the down or left arrow key while holding the "Fn" (function) key.

4. Click twice on the speaker icon on the task bar at the bottom of the laptop screen to open a small rectangular window on the right corner.
   

5. 5

   Click and hold the left mouse button on the volume slider control and drag the control upward to increase the volume or pull the control down to lower the volume
   

Most of the time their are multiple ways to do this.

1. On the speaker in the lower right hand corner left click and a volume bar appears. Slide it up and down. It should be adjust to 75% IMO.

2. On your keys there should be symbols that look like speakers that should match the color of you "fn" key. Press and hold the fn key and then press the corresponding speaker key to increase or decrease the volume.

3. There may be a rotary volume control on the front of the laptop case. It's as simple as turning it to increase or decrease it.

On the volume bar in windows verify that the muted in unchecked.