PC won't power down after shutdown.

[Messerschmitt]

I just build up my rig.
E6600
2Gb Corsair 800mhz
XFX 8600 GTS Extreme
Mobo: Gigabyte P35 DS3R

XP Pro

When I shut down the fans, PSU, CPU Fan, Fan LEDs are still running, so the power just won't cut off.
Before this, I had the "windows is shutting down" mesasge freeze as well on shutdown but it got away after I installed XFX video card drivers.

Another thing that I am afraid is that this might actualy be hardware? I mean I went to q-flash, and I used the F10 for shutdown in bios. When I do that, it shuts itself down but in 1-2 seconds it starts all up by itself.

Even trying this: immidiately after it shuts down after I press F10 I shut down the PSU from the back button (from I to O), and amaizingly it STARTS UP for a very brief second then it shuts down.

Is this PSU problem?

[Carbon Dudeoxide]

I had this exact same problem almost a month ago.
All I did was system restore in safe mode.
You might want to check this topic out.
http://www.computerhope.com/forum/index.php/topic,36348.0.html

Before you do, can you tell us if you did anything to your computer?
Did you add any new hardware?
Did you install/run anything that would of done this?
What antivirus do you have?

[patio]

Double check your wiring on header1 on the MBoard...is reset and power hooked up backwards ? ?