My experiance 0_-

0_0 well ahum lets start with my pc specs
asus p5ad2 premium wireless edition
asus eax800 xt 256 pcie
1 gb ddr 2 kingston ram
p4 3.4 800 fsb
bla bla bla
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Recently i noticed my computer turning on all by itself ... after like 1 month of testing i found that it the problem was caused by not 1 thing but 2 or more....
first off if u have an asus card it requires "enhanced drivers"....if these drivers arent installed in proper order .. it causes problem the video card doesnt turn off with the rest of the system causing me to belive it retains volatage wich causes a feedback making the computer start up again,,, second i have a logitech mouse which had been reported to cause problems when u use there software just plud the mouse in and let windows xp drivers do work..another problem maybe a hiden wake on lan setting in my computer ->properties ->device manager -> click on properties of ur lan device -> advance - wake on settering change to none and walla 90% of the time its that if u still have a problem i suggest checking ur moterboard for leaking capacitors which would look like stuff oozing out of ur mobo and it should stink like electrolyte /and or burning smell of pcb..as for me the restarting has stoped after i reinstalled drivers for video card in order restarting for each and removing logitech mouseware...good luck with your problems :grinthumb

Ok

Ok yah some drivers maybe the problem aswell DAH... I was on a CUPS fix that day as three computers came into me DOAs because the people that had them did not buy a CUPS when we sugested to them for the homes they live in to get them... all three own CUPS now, yah drivers can do that and I have had problems like that with the mouse brand you use come to think of it. :giddy: another thing I have encountered is with smokers the build-up of tar on the Mobo can be conductive and will sometimes go that or other wonkee things... cat and some dog hair will do the same and some cats and dogs cannot remove iron from their system anyother way other them through the hair, look at that if you have a cat or dog... I have come across a few other cases that have things like that happen but thar are long shots and it is not probable thet that would be your problem.

I also got a new P5AD2-E Premium and have been experiencing the same problem (after shut down, it boots itself back up after a few minutes).

ASUS says: ."Please strip system to 1 stick of ram, video card, cpu, hdd and reset the bios listed in your manual as CLRTC on page 2-20. Test for grounding by running board outside the case. If still has issue test the case switch by unplugging it from the 2 pins on the board and short the two pins out with a paper clip. last have power supply tested. If all fails you have bad board .......

I put in another P5AD2-E, and having the same problem. I've found that disconnecting anything (LAN cable, power off DSL Modem, even just disconnecting phone line) in my ADSL circuit solves the problem. It's acting like Wake on LAN, but BIOS wake settings all disabled. ASUS says weak or degrading 3.3 volt from power supply can cause this (I'm using 20 pin PS now). Will put in 24 pin PS on Tuesday, and advise.

See Previous Post - I got a new 24pin PS, and that with the new P5AD2-E Premium MB still did not resolve the problem. So I re-read the thread. Thank you ""ForbiddenPlaneT"" I found that hidden switch as you described, DEVICEMANAGER/NETWORKADAPTERS/ (your specific adapter) /PROPERTIES/ADVANCED/WAKEUPCAPABILITIES. It was set to "Magic Packet and Pattern". I reset it to "None" and now my system shuts down and stays down. I alse see that the Link Light on the ADSL Modem goes off when the computer shuts down. When all else fails, just re-read and follow the instructions. Tnks again.....

I saw this happen once when it was caused by an incompatibility in the software I was using for my CDRW. I think it was something "Easy CD". It was just a version that was incompatible with XP. It was a pain to uninstall because you had to change values in the INI file to make it quit. After I installed Nero it worked fine. Driver conflicts can cause hardware problems like this. In my case it was just a software incompatibility. If you use WinXP SP2 there may be a list of software that is just incompatible as well.

Worked for me too (well, for my client, allright)...It was AOpen motherboard, brand new system, but it was Yukon Gigabit ethernet card....

Thanks ForbiddenPlaneT for demystifying this interesting behaviour.

This is making sense, i have allmost same setup as xeno and having the same problem. Everytime i turn off my pc, i flip the switch on the back of my psu, so it dosnt start up by itself. I was sure it was a motherboard issue, somehow it seem obvious.

What is more annoying is, i changed to this mobo (p5ad2 premium) from an intel board that was having random reboot issues, just to end up with this problem. And i am quite sure that i am far from the only one, having issues with asus support. Their website is the slowest on the planet, and they seem to only release updates for 64bit stuff, instead of fixing other issues like this first.

But when i get home from work today, i will try and locate the extra setting for WOL, i really hope that solves it. If it does not, i will rma this mobo for sure!

Ok, all i can say is triton was right on the nail... i went to manage computer>advanced properties of the yukon adapter (both of them) and disabled magic packet.. and viola.. awsome!!!!

Thanks for the help.

A few more sugestions

I had this problem with my system for a long time. Mine is a Microstar board and Athlon 64 processor with Cooler Master water cooling. THe strange thing with mine is that if I put it in hibernation it would stay off. It only self started if it was actually powered off, but not from hibernation. Usually I just flipped the power switch on the back to make sure it would stay off. Simple and effective. I just considered it a fluke nusance. Then just lately I installed a PCI card for extra USB and firewire and behold it stays off when powered down. THis lead me to suspect that its a USB problem. Remember USB is powered even when the system is off. You can tell this by the fact that some LEDS on USB devices stay lite even after the system is powered off. I suspect that this is what is causing these machines to turn back on. Something plugged into the USB triggers the power supply to turn on just like the mother board switch does. It might be a power drain or surge from a printer or something similar. To find out for sure if this is the problem turn off all the USB in the BIOS and see if it turns on still. Or just ignore the problem and flip the power switch.