I've upgraded my computer... now a sound problem arises... I'm using bubbles as my screensaver set to 6 mins, after that in power options turn off monitor at 15 mins.. I've installed Adobe Audition, Winamp etc.. when i tried to play a song in winamp, it shows like the below attached image, opened audition: same problem, opened WMP: same problem... no sound from computer... i've checked speaker levels, while moving the slider, it shows nothing... plz help... is it a motherboard problem ???