my motherboard can't change the audio setting to 5.1 channel. my motherboard is d101ggc. the line in channel can't change in output. and the line channel and mike in works as mono channel, help me what to do for this . i have taken my motherboard in 26-04-2006. if the warantee period is valid till the day for repairing, please inform me. because i can;t find it.