Stereo reversed only on Left4Dead

[Rushmachine]

Hi guys

Alex did you fix that problem?

it reminds me that i had the same problem with surround 5.1 headset and surround speakers 5.1
using win 10 so after search and research google chasing the solution for this problem and found nothing, beucase of that i switched back to the win 7 and using win 7 I don't have this problem a maybe that was because my motherboard isn't compatible
win 10 nor its drivers. but i've found a topic in a forum and it seems an app may corrects it,

Give it a try:http://www.overclock.net/t/1114172/how-do-i-reverse-audio-channels-win-windows-7

Roll up the page and you'll find a user called edRoxter, he provided the software link and a little tutorial.

Good Luck

-Rush