My friend purchased a Creative Inspire 5.1 5200 multimedia speaker system this Christmas for his desktop computer. He followed the instructions to set them up and plugged them into the sound card correctly. He played some songs from winamp and everything worked pretty fine. But after reboot the computer, he tried to play some more music and he noticed the sound only came from the rear right speaker. He reinstalled the sound card driver, but had no luck. It's a Creative X-Fi Xtreme Gamer card. Can't figure out whats the problem.
Need your help to fix this issue.
 
Thanks..