PC turns itself on (SFW)
I put this P8Z68 DELUXE/GEN3 into production about 10 months ago: »[motherboard] P8Z68 DELUXE/GEN3 no video after reboot
The last month or so, occasionally, I turn it off in the morning, go out to work or such, and come back to find it has turned itself on and booted to the default OS desktop (auto-login). This stopped for a week or so and I thought it was over but I awoke about 2:14 this a.m. to the POST beep, as it did it again. FWIW, there are multiple Linux installations and an XP SP3 on this machine but I don't use hibernate or suspend, just power off.
It's connected to a "Smart" power strip that shuts off monitor and amplified speakers when shut down. There is a phone line connected to a pci modem and external serial-to-usb modem that stays powered off until I need it.
I've triple-checked the "power on" settings in BIOS
The BIOS is the latest, apart from some XP/Win7-only updates
Early on in a generic "computer turns on by itself" google search, apart from the more prevalent Win7 update wakeups from sleep, there is a thread about a newer Asus mobo that does something similar-looking: »www.tomshardware.com/forum/32954···g-itself
Have you taken a second look at BIOS options ?
Wake on LAN.....?
Wake on Ring....?
Any Auto Start or alarm functions ?
EDIT: OPPS ! missed the first picture !
Try checking voltage of or replacing CMOS battery.
Have you looked for a BIOS update ?
Have you visited the Asus user forums to see if others report any trends or problems with this Mobo ?
BIOS is the latest (second picture).
CMOS battery was, I believe, checked/new at build time. As I can't imagine a theory that would implicate this battery, ATM, I'm not going to go to the lengths it requires to get at it if only for a wild goose chase.
Could post at the Asus forum but think it would have shown up at google. Thanks.
MacGyverDon't Waste Your EnergyPremium,ExMod 2003-05
|reply to berserken |
Try getting rid of the smart power strip for a while and see if the problem goes away. If that isn't the culprit, I would look at the power supply.
Yes, that could be a strategy, if this becomes more frequent. In the meantime, one thread at the vip.asus.com forums spoke of Intel nic drivers with wake on events enabled causing similar symptoms. I made a rare boot to XP, where I have the Intel nic disabled, since it's not connected to anything. I could see a couple of wake-up events checked, so I enabled the nic and unchecked them. Also, the Realtek nic, which is active, connected to my router, had another feature related to waking up and I turned that off. Not that I would think an OS driver would retain control when the OS is not loaded but I have had the experience of changing the COM port for my pci modem in windows change the COM port in Linux, also, so maybe some switch in hardware is being thrown. I think I'll wait awhile and see what shakes out.
signmeuptooThank you YankeesPremiumReviews:
|reply to berserken |
Actually, the SMPS might BE the issue! What make and model SMPS is it? Have you done a search on topics about that power supply?
Another thing is the case switch, if it is defective, or if tin whiskers have formed?
But if not, the power strip could very likely be suspect.
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signmeuptooThank you YankeesPremium
I haven't read any SMPS reviews or forums in ages, but CM wasn't a go to brand for units a while back. The thing might be fine, but it's just something to keep in mind.
|reply to berserken |
If I remember correctly, this board has 2 Gbit LAN ports. One of which is an Intel NIC. The Intel drivers have wake on magic packet and wake on link enabled by default. If someone is messing with you and sending out wake packets, your machine will power on. Disable these 2 in the drivers and see what happens. OR if you are connected to the Intel port, just switch to the Realtek port and see if it resolves the problem.
Yes, the Intel is not being used. (It was disabled and I enabled it just to uncheck the wake-on settings under Power Management). I remember seeing the Wake on Pattern Match on the Advanced tab for the Realtek and disabled that. By and by, I'll boot into XP, re-disable the Intel nic, and double check the Advanced tab for the Realtek. Thanks.