Thanks for the specs. There is a separate section in the User CP where you post all of that.
As it's new, I would look at Interrupts (IRQ) as the sound usually is on a shared IRQ with a higher priority device. The mouse is a "high priority" device and should not be shared or shared with some lower priority device.
Also, get the latest BIOS and sound drivers
, as they can be potential issues. Actually check for updated drivers for all the hardware as many times what comes with a new PC is not the "latest and greatest".