Computer will not shut down/turn off power

Hi guys.

I'm having an issue where the computer will not shut down unless I turn it off at the PSU/power supply (I've had the issue for about a month now).

Windows 7 will run through its normal shut down procedures, then the screen goes black, but nothing happens apart from the fans going really loud for a few seconds before they quiet down and nothing else happens.

The computer restarts fine, but does not shut down at the power button.

I suspect a faulty motherboard (Asus M2N68-CM - pretty old now), or maybe a service/process is not finishing after shut down.

Would greatly appreciate some expert knowledge on this one!

Thanks,
Josh

Could you do a shutdown trace by following this article: Gathering a Startup, Shutdown, Sleep, Hibernate, or Reboot Trace

Please download the latest Windows 8 SDK here, it works flawlessly with Windows 7: Windows Software Development Kit (SDK) for Windows 8

Once you run the setup, choose the install location, hit next and select ONLY "Windows Performance Toolkit" and click install. After this, you HAVE to restart the system, then follow the given tutorial.

This can help forum members and even me (I'm not much of an expert in analyzing these results ) identify if anything is stuck during shutdown.

OR

There might be faulty driver or some bad setting in the BIOS. Try resetting the BIOS to the defaults.

Thanks for the reply mate.
Do I need to upload the result file?

Oh, and I've already tried resetting the BIOS.

Hungrytoheal said:

Thanks for the reply mate.
Do I need to upload the result file?

Oh, and I've already tried resetting the BIOS.

Yes. That will help people solve your problem.

File available in the link below.
JOSH.04-03-2013.18-46-13.Shutdown_1.etl download - 2shared

Hungrytoheal said:

File available in the link below.
JOSH.04-03-2013.18-46-13.Shutdown_1.etl download - 2shared

I am sorry, but can you use WinRAR and compressed it with highest compression so that the file size becomes lesser?

@OP, you could also check in here: Computer Does Not Shut Down (Windows 7 or Vista) | HP® Support

sfc /scannow reported to have fixed some errors, but the problem still remains. There is a log file, but it's pretty huge.
Compressed file here: WPA File.zip download - 2shared
That link didn't help.

Thanks guys.