Take a look at your power options.
Start - Control Panel - Power Options

You may have to adjust your power plan for whenever your laptop is plugged
in.




"Robert" <Robert@discussions.microsoft.com> wrote in message
news:58E5291A-F07F-4F74-8BC4-41E7B9CE66BC@microsoft.com...
> Whenever I walk away from my Vista Home Premium laptop (plugged in) for
> more
> than 5 minutes it requires me to click on my administrator icon to regain
> access. Then the screen blinks (several times) black and white pixels of,
> for instance, an excel spreadsheet and finally settles down (3-5 seconds)
> and
> all is well. This is not a seamless awakening of the computer. Is there
> a
> problem with this brand new Lenovo laptop?
>
> Second, how can I disable the requirement of signing on everytime I walk
> away from the computer for more than a few minutes? I don't want the
> shutdown nor do I want the "security" of signing in as administrator.