I have the same problem. The sleep used to work fine, suddenly around 2
weeks ago it refused to go to sleep. The screen would shut off but
everything else is still on. I tried using the hotfixes microsoft had, but
all of them "doesn't apply" to my computer. I have a Latitude D630 with
Vista Ultimate. Also updated my graphics card and the bios, no luck. I
didn't install any software or hardware 2 weeks ago and there's no hardware
issues, I ran a complete test on that...anyone with any ideas?