Now this noise starts coming from my computer when The Sims 3 is maximized, and goes away when I minimize it. It's not very loud but it got me worried. It's most intense during the intro cinematic and barely audible afterwards. It's a strange high-pitched noise, I'd consider it coil whine but it doesn't happen with anything else. Staring at the Windows desktop, stressing my hardware with synthetic tests, playing extremely intensive games, NOTHING else produces this noise. Anyone have any idea what it could be?