Will not go to sleep anymore

I have a Dell Vostro with home premium for about a month now. Sleep and
hybernate mode worked fine. Seems like it stopped going to sleep (monitor
still powers down) after I downloaded SP1 for Vista.

Is this a common problem? Reading some of these posts, it seems as though
it may be.

I know, I know....

Read all of the articles about SP1 Beta AFTER I installed it.

Thanks

See:
How to Troubleshoot a Vista Sleep Mode Problem and Find a Solution
http://www.vistax64.com/tutorials/63...-problems.html
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"crazythunder" <> wrote in message
news:3C6F2AFD-AC5F-4FF0-9B27-...
>I have a Dell Vostro with home premium for about a month now. Sleep and
> hybernate mode worked fine. Seems like it stopped going to sleep (monitor
> still powers down) after I downloaded SP1 for Vista.
>
> Is this a common problem? Reading some of these posts, it seems as though
> it may be.
>
> I know, I know....
>
> Read all of the articles about SP1 Beta AFTER I installed it.
>
> Thanks