Windows 7 Problem with audio. "Tinny"/ "Robotic" sound.

[Selvos]

I recently installed win 7 clean install.
Every time I try to play any sort of audio, be it online or off, I always eventually get a "robotic" /"tinny" or a "static-y" sound from any source.

Device Manager says my drivers are up to date. I have NVIDIA High Definition Audio and Realtek High Definition Audio. I checked Acer and all of my drivers are up to date according to their site.

Any ideas?