Huh. After rebooting a couple times, now everything's working fine.
Something in that final troubleshooting link seemed to do the
trick...or maybe I hadn't rebooted since installing SP1? Anyway,
thanks for your help!

On Mar 28, 12:11 pm, highgrounds...******.com wrote:[color=blue]
> Hmm. I've now gone through the whole process...it still does not seem
> to be working. This is becoming very frustrating.
>
> On Mar 27, 11:35 am, "Bob" <b...@nowhere.net> wrote:
>[color=green]
> > How to Troubleshoot a Vista Sleep Mode Problem and Find a Solutionhttp://www.vistax64.com/tutorials/63567-power-options-sleep-mode-prob...
> > -------
> > *Report back, please*
> > [When responding to posts, please include the post(s) you are replying to so
> > that others may learn and benefit from the issue][/color]
>[color=green]
> > [How to ask a question]http://support.microsoft.com/kb/555375[/color]
>[color=green]
> > <highgrounds...******.com> wrote in message[/color]
>[color=green]
> >news:c8a18fb2-ad76-4628-88ac-20067cc89564@a1g2000hsb.googlegroups.com...[/color]
>[color=green][color=darkred]
> > > Bob, thanks for trying to help. I've just tried all that and no dice.
> > > Any other suggestions?[/color][/color]
>[color=green][color=darkred]
> > > On Mar 27, 11:07 am, "Bob" <b...@nowhere.net> wrote:
> > >> Go to Advance Power Settings.[/color][/color]
>[color=green][color=darkred]
> > >> Set hard drive to turn off a minute or 2 before sleep.[/color][/color]
>[color=green][color=darkred]
> > >> Set Hybrid and Hibernate modes to "Never/Off"[/color][/color]
>[color=green][color=darkred]
> > >> Under USB settings select "Disable"[/color][/color]
>[color=green][color=darkred]
> > >> Under Multimedia select "Allow ....."[/color][/color]
>[color=green][color=darkred]
> > >> -------
> > >> *Report back, please*
> > >> [When responding to posts, please include the post(s) you are replying to
> > >> so
> > >> that others may learn and benefit from the issue][/color][/color]
>[color=green][color=darkred]
> > >> [How to ask a question]http://support.microsoft.com/kb/555375[/color][/color]
>[color=green][color=darkred]
> > >> "Max" <m...@virtualmax.com> wrote in message[/color][/color]
>[color=green][color=darkred]
> > >>news:fa328835-099c-417e-b2ce-5576f7cda7b8@u69g2000hse.googlegroups.com...[/color][/color]
>[color=green][color=darkred]
> > >> > Mine is the Intel P35 chipset, though my wife's computer is using an
> > >> > nVidia chipset and is having the same symptoms, so probably that's not
> > >> > the issue.[/color][/color]
>[color=green][color=darkred]
> > >> > =Max=[/color][/color]
>[color=green][color=darkred]
> > >> > On Mar 25, 1:33 pm, Max <m...@virtualmax.com> wrote:
> > >> >> TRSCGA & Joe,[/color][/color]
>[color=green][color=darkred]
> > >> >> What motherboard (or motherboard chipset) are you using? Perhaps this
> > >> >> could be related to a specific BIOS or driver incompatibility with
> > >> >> SP1?[/color][/color]
>[color=green][color=darkred]
> > >> >> I'll post mine tonight, as I don't recall which chipset I'm using, and
> > >> >> I'm at work now, so I can't check.[/color][/color]
>[color=green][color=darkred]
> > >> >> =Max=[/color][/color]
>[color=green][color=darkred]
> > >> >> On Mar 24, 4:41 pm, joe.rybi...******.com wrote:[/color][/color]
>[color=green][color=darkred]
> > >> >> > On Mar 24, 11:45 am, TRSCGA <TRS...@discussions.microsoft.com>
> > >> >> > wrote:[/color][/color]
>[color=green][color=darkred]
> > >> >> > > "Max" wrote:
> > >> >> > > > I have three PCs in my house running Vista. Before installing
> > >> >> > > > SP1,
> > >> >> > > > all
> > >> >> > > > of them would routinely go to sleep automatically, as per the
> > >> >> > > > power
> > >> >> > > > management settings. Since installing SP1, they continue running
> > >> >> > > > without ever going into sleep mode. I can still enter sleep mode
> > >> >> > > > manually, which works fine, it's just the automatic sleep that
> > >> >> > > > won't
> > >> >> > > > work.[/color][/color]
>[color=green][color=darkred]
> > >> >> > > > Only software in common across all three machines (other than
> > >> >> > > > Vista)
> > >> >> > > > is Office 2007 and Windows Live OneCare. Both were installed
> > >> >> > > > prior
> > >> >> > > > to
> > >> >> > > > installing SP1.[/color][/color]
>[color=green][color=darkred]
> > >> >> > > > Thanks for your help,
> > >> >> > > > Max[/color][/color]
>[color=green][color=darkred]
> > >> >> > > Max,
> > >> >> > > I have same problem with my Vista machine. Power management was
> > >> >> > > working
> > >> >> > > fine before SP1. I am also now having the problem with my monitor
> > >> >> > > no
> > >> >> > > longer
> > >> >> > > going to sleep and sometimes having a problem with the screen
> > >> >> > > saver
> > >> >> > > starting.[/color][/color]
>[color=green][color=darkred]
> > >> >> > > Does anybody know of a solutions yet?
> > >> >> > > -TRSCGA[/color][/color]
>[color=green][color=darkred]
> > >> >> > Having the same problem here -- worked great before SP1. No settings
> > >> >> > changed. Anyone have any ideas?[/color][/color][/color]