Computer wont shut down!

So i posted this forum before on EVGA forume at:Computer turns on after shut down from windows and i didnt get any solution here, thought to ask it here as well, hopefully i may be able to find a solution.

So this has been happening for few days. after i shut down my computer, it restarts automatically after a few second (1-3). i have searched webs, i have tried some options on bios, i had previously problem with my power suppy, i changed it to a brand new one, but my problem still remains.
How can i fix it?
Regards

My specs

win7x64
i7 950
EVGA x58 FTW3
EVGA gefore 580
6GB DDR3
Power supply: crossair 1000W HX

try checking CAREFULLY to see if you have any of these connectors reversed

event3horizon said:

try checking CAREFULLY to see if you have any of these connectors reversed

Hi
Unfortunetly thats not the problem, my computer wires are plugged in right.

post ALL the settings in your power management BIOS page and what they are set to:

also try clearing CMOS parameters:

event3horizon said:

also try clearing CMOS parameters:

Thank you all for your responds. i think i may have to give a little background about myself. i am not new to computers and fixing it, ive been doing it for several years now, before i post here i have researched and i didnt get to any solutions.

My bios has been reset many ways, i even updated it, the problem is not freezing right before the shutting down, i have already checked all of those and if you check my evga forum, we already went through that.

My computer literally does shuts down, but the problem is it is turned on by itself, without anyone touching anything. this is what im trying to fix.

thanks

Ok. Do one thing. Remove the mother board completely from the cabinet and take a brush/air gun and do the good clean-up and attach it again. Now your computer should not be restarting automatically.....It happened to me as well few years ago. Actually dust or little electronic material get glitch with board which is not visible but it does short the circuit. Please try and see if it works. Good luck!

mayheamk said:

event3horizon said:

also try clearing CMOS parameters:

Thank you all for your responds. i think i may have to give a little background about myself. i am not new to computers and fixing it, ive been doing it for several years now, before i post here i have researched and i didnt get to any solutions.

My bios has been reset many ways, i even updated it, the problem is not freezing right before the shutting down, i have already checked all of those and if you check my evga forum, we already went through that.

My computer literally does shuts down, but the problem is it is turned on by itself, without anyone touching anything. this is what im trying to fix.

thanks

We cannot just assume you've done these things without you mentioning anything other than my computer shuts off and turns back on and 'here's my other thread.'

If you've done it all as you say, time to get a new motherboard.