I don't think you can tell windows to turn off or on a display; I think if it sees it, it displays it. So the real question is, why isn't it seeing your second monitor? A few posts back you were going to try swapping monitors, cables, etc. Did any of that work? You said the Sony displayed "No Input Signal" and "Input 3-DVI-D"; try different input options? I'd try different combinations. Try Sony as the sole monitor. If you get nothing you know something's gone wrong with Sony (or settings/cable thereof; you may get different results with Sony in vga mode, sony in dvi, sony in hdmi if available). Also, maybe you have a small hi-def tv you could try as 2nd monitor? I know this stuff's a pita; good luck with it. Oh, btw, of the 50000 keystroke variations, the main one is windows key -x which brings up menu to most of the stuff we know and love; ctl panel, device manager, command prompt, etc. But not shutdown; good ol' ctl-alt-del can get you there; there's a power icon in lower right corner after you hit ctl-alt-del; shutdown is one of the options.