It can be a number of things. But some good advice is, when you are done
with the computer for the day, turn it off! Don't just clost the lid put it
in standby/hibernation and walk away.

PC Tech Solutions
[url]http://pctech-solutions.com[/url]


<tejas.nadkarni******.com> wrote in message
news:1173967016.490005.103670@o5g2000hsb.googlegroups.com...[color=blue]
> So I've been running Vista Home Premium on my Sony VAIO SZ since Feb
> 9th and overall it's been running remarkably well. Haven't really had
> any crashes, all the apps I've installed have worked flawlessly and
> I'm actually getting better performance in apps, games in Vista than
> XP (dual-booting XP so I've been able to compare).
>
> However, I have a really strange problem in that at very random times
> Vista seems to freeze and the only thing that will remedy it is to
> hold down the power button to turn it off.
>
> It's only happened a few times and is not normal occurence. For
> example it was running for about 7 days straight without a reboot,
> then last night I installed this week's Windows Updates and the system
> restarted.
>
> This morning I woke up around 8AM and went to check my email, I opened
> the lid and it had frozen. The clock still said 2:50AM which would
> mean that is when the catastrophe happened. I restarted it and it came
> back up fine.
>
> I checked the Event logs and there's nothing around that time at all.
> I remember using the laptop until around 1:50AM or so so it was idling
> when this happened. The other times it's happened also seem to be
> either during or right after it's been idling. However, puzzlingly
> like I said it'll sometimes run 7 or more days straight at a time
> (including numerous hibernation resumes and standby resumes).
>
> Any ideas what could be causing this problem? The only thing in the
> logs was an "Unexpected shutdown of Windows" at 2:48AM which is sort
> of a "duh!" moment.
>
> Overall I'm loving Vista but this is frustrating because I can't
> diagnose what the problem is. I have all my power setting timers
> turned off (Hard drive powerdown never, hibernate never, standby
> never, etc).
>
> Oh and this has always happened while the laptop is plugged in. If
> anyone knows of any culprits or things I can try please let me know.
> I'm going to see how long it runs after this mornings incident.
>
> FYI...Memory test came back fine and like I said it runs everything
> beautifully 90% of the time.
>[/color]