Computer turns on by itself

[Muse]

The past couple of mornings it has turned itself on at about 8:20 and 9:20 AM respectively. I have the BIOS configured to turn on the computer daily at 11:53 PM, and it does so when power is supplied to the machine (I leave it plugged in when I want to do an auto-recording of a radio program, unplugged otherwise. Then I use a utility to shut the machine down automatically a bit after 1:00 AM).

At first I thought that maybe a program was doing it, my AVG Free 7.5, because it's configured to do automatic updates in the morning after 8:00 AM, but I don't think that any program is capable of firing up the computer. Am I right about that? I suppose it's not complete science fiction.

My case's power-on switch broke a few months ago and instead of buying a new switch, I salvaged the reset button from an old AT case I had sitting around and I installed it on the front of my ATX PC's case and wired it to the power-on connectors on the MB and that's worked fine, at least up until now. I suppose it's possible that that switch is shorting. That's about all I can think of.

This is my "new" system. I'm tired of even trying to update my system rigs (Anandtech's System Rigs functionality has been unusable for some time, AFAIK), but it's a patch job on Beauty in my sig.

I put in a new MB, CPU, PSU:

MB: MSI K8N Neo-FSR/ V V2.0
CPU: AMD Athlon Venice core 3200+ 2.2 GHz
PSU: Corsair 520HX

Went from Windows 2000 to XP Pro.

Does anyone have any other ideas? TIA.

 

[Muse]

Bump.

 

[Noema]

My computer does that unless I disable network turn-on in the BIOS. Check if that option is disabled.

 

[Muse]

<div class="FTQUOTE"><begin quote>Originally posted by: Noema
My computer does that unless I disable network turn-on in the BIOS. Check if that option is disabled.
</end quote></div>

Mmm. I went in the BIOS (Award/Phoenix) but didn't see that. Maybe I don't know what it looks like.

Under Power Management Setup, I have:

ACPI function [Enabled]
ACPI standby state [S1(POS)]

Wake up event setup:

Resume by PCI Device PME# [Enabled]
Resume by RTC Alarm [Enabled]
... and that's set to daily at 23:53:00 as I said in the OP
S3 wake up by PS2/Keyboard [Disabled]
S3 wake up by PS2/Mouse [Disabled]

 

[tw1164]

I'm guessing here, but if AVG is requesting an update (http/ftp?) it has to use the NIC to do so. The NIC is a PCI device (even if its onboard). I would disable the AVG updates and see if that changes anything. Does your MB support S3 Mode?

 

[Muse]

Originally posted by: tw1164
I'm guessing here, but if AVG is requesting an update (http/ftp?) it has to use the NIC to do so. The NIC is a PCI device (even if its onboard). I would disable the AVG updates and see if that changes anything. Does your MB support S3 Mode?

Ah, I think it does support S3 mode. Should that be disabled?

The MB does have onboard LAN. Thing is now that this hasn't happened in a couple of days. I don't always leave the PC powered, so naturally it wouldn't happen on those days. Last night I left it powered and it wasn't on this morning, but maybe if I hadn't turned it on at 8:36 AM this morning it would have turned on "by itself." I'll have to monitor the situation and if it does turn itself on automatically I'll try disabling the automatic AVG updates and see if that's involved. Thanks for the ideas.

 

[tw1164]

No, S3 will save you more power.

http://www.lifsoft.com/power/faq.htm

 

[Muse]

Originally posted by: tw1164
No, S3 will save you more power.

http://www.lifsoft.com/power/faq.htm

Thanks, anyway I don't use suspend. I always "Shut off" the machine. This morning, 20 minutes ago, I was sitting at my desk next to the shut-down machine and it "spontaneously" started up! :Q I had my cordless phone in my hand and I was dialing a number, probably a coincidence. On your theory that it's a call from AVG for a network connection, I rebooted the machine, went into the BIOS and disabled
Resume by PCI Device PME#. Will see if that stops this behavior. I don't know why I'd want to have that enabled, anyway...