Swapping SATA connector whilst pc is off seems to be switching pc on..

[pollaxe]

Hmm, this is a bit of an odd one.

I've recently built a new i7 920 system with an Asus P6TD Deluxe motherboard.

It's just been built and has been running for a few hours okay but I noticed something strange. When the PC was powered off (though the PSU was receiving power & still had the power lead into it) I decided to rejig the placement of a couple of the SATA leads.

When I unplugged the SATA connector (this is the data lead, not the power lead) and put it into another socket, the PC powered on. I've tried this a couple of times in case I'd done something else but no, putting a SATA lead in (to at least two of the sockets at any rate) seems to switch the pc on.

I'm not keen to repeat the process in case it's a short or something similar but having said that all stand-offs look good and I can't see an obvious fault anywhere. The system seems to be running fine otherwise too...

I've not experienced this before - perhaps I'm being a total noob here - anyone have an idea as to what's going on?

[BUFF]

what OS are you running?
it sounds like it's having the effect of a "wake on".

[pollaxe]

Windows 7 RTM 64-bit.
In all honesty it could be something in the BIOS (I haven't had a really good look yet) like a wake (good thinking) I'm just a bit concerned it's a short or something power-related..

[BUFF]

you may well find that Win7's shutdown is more like a hibernate - iirc the default in Vista is.

[pollaxe]

I'll try a copy of Ubuntu on a spare disk and see if it does the same thing.

I hadn't given that o/s side of things proper consideration as I'm always paranoid about power/electricity (the wiring and suppy in general here isn't the best, tbh.)