use headphones and see if you facing same issue else try this :
Go to control panel and Open the Device Manager
then Expand the "Sound, video & game controllers" and right click on "IDT High Definition Audio Codec". Select to "Update Driver Software". Click on "Browse my computer for driver software". Click "Let me pick from a list of drivers on my computer". Put a check in the box "Show compatible hardware" if not already checked. In the list of devices, click "High Definition Audio" (the native driver). Click "Next". On the Update Driver Warning box, click "Yes" (install the driver). Restart the laptop if prompted. If not prompted, then no need to restart.
If the speakers do not work with either driver then it is not a driver...