PC powering itself on
 

Does any one have any suggestions on why a perfectly well behaved computer would start powering itself up after a random period less than an hour?

I noticed it on this morning when I came downstairs and now the damn thing won't stay switched off.

Thanks!

Re: PC powering itself on
 

its the borrowers m8,abusing your bandwith while your in bed,i bet they had your car keys as well :D

Re: PC powering itself on
 

They can have the bandwidth, just leave the PC alone!

Re: PC powering itself on
 

wake up on lan in the bios or some other wake up option just turn em all off

Re: PC powering itself on
 

What he says.

You might need to make sure you have the latest Bios, some mainboards sometimes "forget" to include all the wakeon events, though this is rare.

Re: PC powering itself on
 

I enabled wake-on-lan a while back as I switch it on from work. That said, it was the first suspect but I've tried disabling it and not seen any difference.

I'm wondering if it's developed a hardware glitch of some sort :(.

Re: PC powering itself on
 

my silverstone media centre case has an iffy power button.... worth a thought? :shrug:

Re: PC powering itself on
 

That's a possibility - I think the power button has only been used about a dozen times since everything was shifted into the case (it came with an iMOn remote unit built in which includes a connection to the power switch) and most of those uses have probably been in the last 48 hours of so.

I might take the case apart tomorrow and check it if I haven't worked it out by then.

Re: PC powering itself on
 

Check the batteries in the remote too. If they are on their way out it could be playing up.

Disconnect yourself from the net to eliminate that booting up your machine.

Also try using a different power socket to plug your PC into.

Re: PC powering itself on
 

At the moment (fingers crossed) it seems to be working. I left it disconnected from the mains overnight and since then it doesn't seem to have done it's spontaneous power up thing.

It occurred to me that although I'd told the built-in NIC card not to respond to WOL, the motherboard was still providing it power even when shut down. Is it possible that got itself "confused" causing it to periodically power up the machine?

Re: PC powering itself on
 

Mainboard remains powered, even when it's "off", provided it's still plugged in.

Re: PC powering itself on
 

Agreed, but the NIC doesn't necessarily have power. One of the things I had to do to get WOL working under Linux (this is an Ubuntu box) in the first place was alter the shutdown script to include an option to keep power to the NIC. I forgot to remove that when removing the WOL stuff.

Re: PC powering itself on
 

TBH, I see it as academic.

I use my PC and leave it on 24/7, but if I turn it off, I turn it off at the wall.