Erratic playback from speaker system

  Madam62 12:51 03 Dec 2016
Locked

I have a Logitech 5:1 speaker system on my PC through which I play all my music. However the playback sounds have suddenly become very erratic; sometimes fading and then loud, then fading again and so it goes on. Infuriating! I have no idea what the problem is. We have searched for any loose wires but cannot find any. Any suggestions please before I spend money on a new speaker system. Could it be my sound card? - I use Windows 7,64 bit and a Creative Sound card

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