I've finally managed to track down the reason my Win7 won't automatically go into sleep mode: it's the sound card. ANY sound card. I've tested exhaustively, switching between onboard (via) and two different other cards, one soundblaster internal, one usb external. When the soundcard- any of them - is disabled, windows goes properly to sleep. When it's enabled, only the monitor goes off. What the hell is that all about? Any ideas what might cure it?