Ensure that you aren't muted.
The Windows Sound icon is small, and it can be tough to see if you are muted or not. Click the Sound icon in the System Tray and then click the Speaker button in the pop-up that appears to toggle the mute
Inspect the speaker or headphone connection to the computer.
- If you don't have a sound icon, then your sound drivers are likely not installed correctly.
A bad connection is one of the most common causes of no sound, and is also one of the easiest to fix. Make sure that your speakers or headphones are plugged in completely, and that the cables and connectors aren't damaged.
Ensure that your speakers are connected to the right port.
Make sure that your speakers are plugged into the correct port on the back of your computer. The green port is most commonly used for external speakers, while the orange and black ports are used for surround sound systems and subwoofers. The pink port is for microphones.
Make sure your speakers are powered and turned on.
Many speakers require a power connection, and may need to be turned on in order to work. Check the volume controls on the speakers as well to make sure that they're turned up enough to hear.
Reconnect your HDMI cable.
A common problem for HDMI users is that no sound comes out of the speakers that the HDMI cable is connected to. A simple fix for this is to unplug and then replug the HDMI cable, which should switch the default playback device to the HDMI device.