Is there sound from both speakers?

Action:

Make sure that speaker is connected to other speaker.

The speakers not only have to be connected to the computer, but also to each other. More than likely, of your two speakers, only one will have jacks that allow you to plug in other devices (the other speaker, a subwoofer, input into the computer, and an jack for the power supply). Make sure that the speaker with no jacks is connected to the speaker with outlets. The speaker should plug into the jack that is usually named 'Speaker' or 'Left'. Consult your speaker user documentation for specific information.

Question:

Responses:

Yes, there is sound from both speakers
No, there is still no sound from one speaker