I have 4.1 speaker system, two speakers are in work other two speakers are not in work. In sound device in cantrole panel,there is no option for 4.1 speaker setting. So you suggest proper setting for speaker for my computer.
I had also faced this Problem on my 5.1 Sound System this is not a Drivers Problem this is Sound Card of your Motherboard this is not support to 4.1 Speakers.
this Sound Card Require for you System - :
And if you want to use your 4.1 on your existing Sound Card then you can play songs & any audio in Windows Media Player.then it will gives Sound in all Speakers. Because i have also play all songs in Windows Media Player then All Speakers are working but if i play in Winamp or any other Player then only 2 Speakers are working ...