Just started noticing inconsistent sound volumes with my system. Volume will be fine then it jumps up loud for a second or two, then back where it was. This is happening in wmp, and in games - SC II, and Mass Effect.
Asus P5kpl-cm mobo
Intel Core 2 duo E8400
4 gigs RAM
Lots 'o case fans
Altec Lansing sub / speaker set (about 5-6 years old)
System is about 2 years old, never had this problem before, just in the last few days. I already updated the drivers to the latest version, cleaned the contacts and cleaned out the power source for the speakers. Not sure where to go from there.
Could the onboard sound be fizzin out on me? I don't know where to begin to check. Any and all help always appreciated.