This is a common problem, so don’t worry! First, try connecting the speakers to a separate device to find out if the problem is with the speakers or the computer. Check that all the cables are connected. Sometimes separate speaker systems have multiple cables. Make sure all the cables are in the correct ports. If the sound is fine from another device, the balance might be off on the computer causing one speaker to be louder than the other. For steps on how to adjust the audio balance, have a look on Google or Youtube for guides.