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Computer starts unexpectedly after shut down

 
 
DLGolfs
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      26th Apr 2009
It seams that when I went to a wireless keyboard, I shut down , go to work
and then I return the computer is on. The keyboard does start up the
computer, but NO, I don't have a cat or dog or anyone home at the time.

Could it be a surge in the electircity? I have a surged protector and did
not have this problem when I had a wired USB keyboard.

I have remote access turned off, run adaware in the background and once a
day full scan as with AVG.
Any thoughts?
 
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PA Bear [MS MVP]
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      26th Apr 2009
Are you truly shutting down or putting the machine in Hibernate or Standby
mode? (Sounds like the latter.)

Make sure that the wireless keyboard's receiver is not located anywhere near
something electrical (e.g., router; modem; desklamp).


DLGolfs wrote:
> It seams that when I went to a wireless keyboard, I shut down , go to work
> and then I return the computer is on. The keyboard does start up the
> computer, but NO, I don't have a cat or dog or anyone home at the time.
>
> Could it be a surge in the electircity? I have a surged protector and did
> not have this problem when I had a wired USB keyboard.
>
> I have remote access turned off, run adaware in the background and once a
> day full scan as with AVG.
> Any thoughts?


 
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Tim Meddick
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      26th Apr 2009
DLGolfs,
I am assuming this event happens at any and different times
while you are away from your computer. In that case, while installing the
keyboard BIOS settings may, inadvertently, have been re-set. This is the
most likely cause of this behaviour. Go in to the BIOS setup program by
pressing F1, F2 or DEL, it should say on the screen just before Windows XP
begins to load which key to press to enter setup. Then look for the power
settings and a feature that controls what the system does after a break in
power. If set to ON then if there is a break in power (like your wife
unplugging the computer to do the hoovering then plugs it back in again)
then your computer will power up all on it's own - reset this value to
ALWAYS OFF. It also, just might be an auto-on at <time> feature in the same
place in the BIOS settings, but this is more unlikely. If, on the other
hand, the effect happens immediately after you try switching off. Then this
is because the computer is actually rebooting instead of turning itself off.
Try copy/pasting this into the "Run" box and press [ok]


reg ADD HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon /v
"PowerdownAfterShutdown" /d 1 /f


(make sure the above command is copied into the "Run box" as one line as
line-wrap may have broken it up)

--

Cheers, Tim Meddick, Peckham, London.


"DLGolfs" <(E-Mail Removed)> wrote in message
news:08038CE1-FF54-43C6-96BA-(E-Mail Removed)...
> It seams that when I went to a wireless keyboard, I shut down , go to work
> and then I return the computer is on. The keyboard does start up the
> computer, but NO, I don't have a cat or dog or anyone home at the time.
>
> Could it be a surge in the electircity? I have a surged protector and did
> not have this problem when I had a wired USB keyboard.
>
> I have remote access turned off, run adaware in the background and once a
> day full scan as with AVG.
> Any thoughts?



 
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westom
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Posts: n/a
 
      26th Apr 2009
On Apr 26, 12:35*pm, DLGolfs <DLGo...@discussions.microsoft.com>
wrote:
> It seams that when I went to a wireless keyboard, I shut down , go to work
> and then I return the computer is on. *The keyboard does start up the
> computer, but NO, I don't have a cat or dog or anyone home at the time.
> Could it be asurgein the electircity? I have a surgedprotectorand did
> not have this problem when I had a wired USB keyboard.


Surges are often hyped myths that rarely exist or are made
irrelevant by protection inside all computers. A restarting computer
is due to operation of its power supply controller. One input can be
defined in the BIOS. Certain peripherals can be enabled to signal
that power supply controller to power on. Disable those functions in
the BIOS.

Meanwhile, view numeric specs for that surge protector. Where does
it claim protection in numbers for each type of surge? Nothing exists
because it does not claim to protect from the typically destructive
surge. Fortunately, every computer already contains protection making
most surges irrelevant. Stick to facts and reality such as power on
functions enabled in the BIOS that permit some peripherals to restart
a computer.
 
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Jose
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Posts: n/a
 
      26th Apr 2009
On Apr 26, 12:35*pm, DLGolfs <DLGo...@discussions.microsoft.com>
wrote:
> It seams that when I went to a wireless keyboard, I shut down , go to work
> and then I return the computer is on. *The keyboard does start up the
> computer, but NO, I don't have a cat or dog or anyone home at the time.
>
> Could it be a surge in the electircity? I have a surged protector and did
> not have this problem when I had a wired USB keyboard.
>
> I have remote access turned off, run adaware in the background and once a
> day full scan as with AVG.
> Any thoughts?


When you say shutdown, does the power supply actually stop running?
No fans?

I suspect the BIOS - I knew one guy that found his computer waiting
for him every morning even after shutting down.

His BIOS was set to restart his computer at midnight - some default
value I guess. Sometimes they will wake on any key press, a LAN blip,
etc.

I don't remember about the PS fans though - good question. How are
yours when you shutdown? I want to know about that in particular just
for my own curiosity.

Check the Power settings in Control Panel also just to be sure it does
what you want when you shutdown (not hibernate or standby, etc.), but
suspect the BIOS. The motherboard has a battery you know... it could
be peeking when you think it is unconscious.
 
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DLGolfs
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Posts: n/a
 
      27th Apr 2009
I looked and don't have a setting for break in power or an auto on, I only
have power management and an enable and disable of the keyboard. I can have
the keyboard work on a specific key but does not give me an avenue to do
this, that is set the "specific" key.

any other suggestions?

I am definately not hiberating....

"Tim Meddick" wrote:

> DLGolfs,
> I am assuming this event happens at any and different times
> while you are away from your computer. In that case, while installing the
> keyboard BIOS settings may, inadvertently, have been re-set. This is the
> most likely cause of this behaviour. Go in to the BIOS setup program by
> pressing F1, F2 or DEL, it should say on the screen just before Windows XP
> begins to load which key to press to enter setup. Then look for the power
> settings and a feature that controls what the system does after a break in
> power. If set to ON then if there is a break in power (like your wife
> unplugging the computer to do the hoovering then plugs it back in again)
> then your computer will power up all on it's own - reset this value to
> ALWAYS OFF. It also, just might be an auto-on at <time> feature in the same
> place in the BIOS settings, but this is more unlikely. If, on the other
> hand, the effect happens immediately after you try switching off. Then this
> is because the computer is actually rebooting instead of turning itself off.
> Try copy/pasting this into the "Run" box and press [ok]
>
>
> reg ADD HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon /v
> "PowerdownAfterShutdown" /d 1 /f
>
>
> (make sure the above command is copied into the "Run box" as one line as
> line-wrap may have broken it up)
>
> --
>
> Cheers, Tim Meddick, Peckham, London.
>
>
> "DLGolfs" <(E-Mail Removed)> wrote in message
> news:08038CE1-FF54-43C6-96BA-(E-Mail Removed)...
> > It seams that when I went to a wireless keyboard, I shut down , go to work
> > and then I return the computer is on. The keyboard does start up the
> > computer, but NO, I don't have a cat or dog or anyone home at the time.
> >
> > Could it be a surge in the electircity? I have a surged protector and did
> > not have this problem when I had a wired USB keyboard.
> >
> > I have remote access turned off, run adaware in the background and once a
> > day full scan as with AVG.
> > Any thoughts?

>
>
>

 
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Tim Meddick
Guest
Posts: n/a
 
      27th Apr 2009
If the powerlight is still on then that can only mean that the computer
is in 'Standby' mode or Save-to-RAM (S3) sleep state. It is then just a
matter of finding the cause. Other than power management settings either in
the BIOS or Windows Power Management is where it's usually set.
If you can determine that it is absolutely non of the above causing
this, then other answers are somewhat limited. Some screensavers can put
your computer into 'sleep mode' and some other applications such as
third-party disk defragmenters can switch off your system. Take a look at
all your running applications (download and use process explorer for this
available free from Microsoft) to see if any running apps might be
configured to switch off your computer after a long operation.
If no legitimate application can be determined is using this then I
think you may assume that your computer is infected in some way. I advise
you, in that case, to do a complete scan with Antivirus software as soon as
possible.

--

Cheers, Tim Meddick, Peckham, London.


"DLGolfs" <(E-Mail Removed)> wrote in message
news:6086F111-C77F-4A44-A92F-(E-Mail Removed)...
>I looked and don't have a setting for break in power or an auto on, I only
> have power management and an enable and disable of the keyboard. I can
> have
> the keyboard work on a specific key but does not give me an avenue to do
> this, that is set the "specific" key.
>
> any other suggestions?
>
> I am definately not hiberating....
>
> "Tim Meddick" wrote:
>
>> DLGolfs,
>> I am assuming this event happens at any and different
>> times
>> while you are away from your computer. In that case, while installing
>> the
>> keyboard BIOS settings may, inadvertently, have been re-set. This is the
>> most likely cause of this behaviour. Go in to the BIOS setup program by
>> pressing F1, F2 or DEL, it should say on the screen just before Windows
>> XP
>> begins to load which key to press to enter setup. Then look for the
>> power
>> settings and a feature that controls what the system does after a break
>> in
>> power. If set to ON then if there is a break in power (like your wife
>> unplugging the computer to do the hoovering then plugs it back in again)
>> then your computer will power up all on it's own - reset this value to
>> ALWAYS OFF. It also, just might be an auto-on at <time> feature in the
>> same
>> place in the BIOS settings, but this is more unlikely. If, on the other
>> hand, the effect happens immediately after you try switching off. Then
>> this
>> is because the computer is actually rebooting instead of turning itself
>> off.
>> Try copy/pasting this into the "Run" box and press [ok]
>>
>>
>> reg ADD HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon /v
>> "PowerdownAfterShutdown" /d 1 /f
>>
>>
>> (make sure the above command is copied into the "Run box" as one line as
>> line-wrap may have broken it up)
>>
>> --
>>
>> Cheers, Tim Meddick, Peckham, London.
>>
>>
>> "DLGolfs" <(E-Mail Removed)> wrote in message
>> news:08038CE1-FF54-43C6-96BA-(E-Mail Removed)...
>> > It seams that when I went to a wireless keyboard, I shut down , go to
>> > work
>> > and then I return the computer is on. The keyboard does start up the
>> > computer, but NO, I don't have a cat or dog or anyone home at the time.
>> >
>> > Could it be a surge in the electircity? I have a surged protector and
>> > did
>> > not have this problem when I had a wired USB keyboard.
>> >
>> > I have remote access turned off, run adaware in the background and once
>> > a
>> > day full scan as with AVG.
>> > Any thoughts?

>>
>>
>>



 
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westom
Guest
Posts: n/a
 
      27th Apr 2009
On Apr 26, 7:59*pm, DLGolfs <DLGo...@discussions.microsoft.com> wrote:
> any other suggestions?
> I am definately not hiberating....


Others also asked important questions. If not hibernating, which
other power down state is the machine in?

Rather unusual if your BIOS does not have 'power on hardware'
enable option.

Moving on to other problems: a power supply controller determines
how and when a computer orders its power supply on. If all those
other questions result in nothing, then time to start measuring
exactly what the power supply controller is doing. That will mean a
3.5 digit multimeter and 30 seconds.

First, answer the many questions from others - one question at a
time to hopefully avoid additional work.
 
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DLGolfs
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Posts: n/a
 
      27th Apr 2009
Yes, I thought it might be infected, have done safety live, trend micro and a
full adaware scan, nothing.

I use AVG now. I have had Norton but it missed a virus that Trend Micro
found so I stopped using it.

This all started when I started using the wireless keyboard, any thoughts?

The light is NOT on my sceen saver is windows and I have not changed this at
all. I guess I willl just have to cut the electricity when I leave. I did
this for about a week and it stopped but then after a few days started again.

I have already downloaded the windows based process software and nothing
there either.

Are there any processes that you know that will cause this, so I can stop it
or at least disable it.

I only use Windows to defrag, either in my system or through safety live.

It must be a spyware, I am going to run Spybot, I have Lavasoft running all
the time and a daily full scan.
If you have any other suggestions, please respond.

"Tim Meddick" wrote:

> If the powerlight is still on then that can only mean that the computer
> is in 'Standby' mode or Save-to-RAM (S3) sleep state. It is then just a
> matter of finding the cause. Other than power management settings either in
> the BIOS or Windows Power Management is where it's usually set.
> If you can determine that it is absolutely non of the above causing
> this, then other answers are somewhat limited. Some screensavers can put
> your computer into 'sleep mode' and some other applications such as
> third-party disk defragmenters can switch off your system. Take a look at
> all your running applications (download and use process explorer for this
> available free from Microsoft) to see if any running apps might be
> configured to switch off your computer after a long operation.
> If no legitimate application can be determined is using this then I
> think you may assume that your computer is infected in some way. I advise
> you, in that case, to do a complete scan with Antivirus software as soon as
> possible.
>
> --
>
> Cheers, Tim Meddick, Peckham, London.
>
>
> "DLGolfs" <(E-Mail Removed)> wrote in message
> news:6086F111-C77F-4A44-A92F-(E-Mail Removed)...
> >I looked and don't have a setting for break in power or an auto on, I only
> > have power management and an enable and disable of the keyboard. I can
> > have
> > the keyboard work on a specific key but does not give me an avenue to do
> > this, that is set the "specific" key.
> >
> > any other suggestions?
> >
> > I am definately not hiberating....
> >
> > "Tim Meddick" wrote:
> >
> >> DLGolfs,
> >> I am assuming this event happens at any and different
> >> times
> >> while you are away from your computer. In that case, while installing
> >> the
> >> keyboard BIOS settings may, inadvertently, have been re-set. This is the
> >> most likely cause of this behaviour. Go in to the BIOS setup program by
> >> pressing F1, F2 or DEL, it should say on the screen just before Windows
> >> XP
> >> begins to load which key to press to enter setup. Then look for the
> >> power
> >> settings and a feature that controls what the system does after a break
> >> in
> >> power. If set to ON then if there is a break in power (like your wife
> >> unplugging the computer to do the hoovering then plugs it back in again)
> >> then your computer will power up all on it's own - reset this value to
> >> ALWAYS OFF. It also, just might be an auto-on at <time> feature in the
> >> same
> >> place in the BIOS settings, but this is more unlikely. If, on the other
> >> hand, the effect happens immediately after you try switching off. Then
> >> this
> >> is because the computer is actually rebooting instead of turning itself
> >> off.
> >> Try copy/pasting this into the "Run" box and press [ok]
> >>
> >>
> >> reg ADD HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon /v
> >> "PowerdownAfterShutdown" /d 1 /f
> >>
> >>
> >> (make sure the above command is copied into the "Run box" as one line as
> >> line-wrap may have broken it up)
> >>
> >> --
> >>
> >> Cheers, Tim Meddick, Peckham, London.
> >>
> >>
> >> "DLGolfs" <(E-Mail Removed)> wrote in message
> >> news:08038CE1-FF54-43C6-96BA-(E-Mail Removed)...
> >> > It seams that when I went to a wireless keyboard, I shut down , go to
> >> > work
> >> > and then I return the computer is on. The keyboard does start up the
> >> > computer, but NO, I don't have a cat or dog or anyone home at the time.
> >> >
> >> > Could it be a surge in the electircity? I have a surged protector and
> >> > did
> >> > not have this problem when I had a wired USB keyboard.
> >> >
> >> > I have remote access turned off, run adaware in the background and once
> >> > a
> >> > day full scan as with AVG.
> >> > Any thoughts?
> >>
> >>
> >>

>
>
>

 
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westom
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Posts: n/a
 
      27th Apr 2009
On Apr 27, 6:22 am, DLGolfs <DLGo...@discussions.microsoft.com> wrote:
> It must be a spyware, I am going to run Spybot, I have Lavasoft running all
> the time and a daily full scan.


As noted previously, power up occurs due to actions of the power
supply controller. There is no malware in that hardware device. In
fact many other things also happen long before malware can execute in
the CPU.

The wireless keyboard means it connects how? USB? Infrared? And
your computer has not 'power on enables' in BIOS for infrared or USB?
Power startup is a hardware operation. Hardware switches are enabled
or disabled in BIOS to determine what the hardware does see and
responds to. But powering on a computer (by power switch or any other
means) is a hardware function completely inside the power supply
controller. No malware can exist in hardware.

If these 'enables' that cause power on do not exist (and that would
be unusual), then moving on to view what is causing this power using a
multimeter is the next step.
 
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