windows completes shutdown but will not power off machine.

hi,

i have a supermicro P8SC8 motherboard running windows 7 the machine completes it's shutdown but will not
power off the power supply any advise would be helpful

thanks,

See same case Pc switch on after shutdown - Windows 7 Help Forums

You can also try a Shutdown command
Open a CMD window and type:
C:\Windows\System32\shutdown.exe /p
It will shutdown. See if it remains off.

no dice, the computer completes the "shutdown windows" screen and goes to a pure "greenish blueish" screen and then i have to hard power off the machine, i have disabled wake on lan for the network cards. this is the only issue i have with this machine.

Open a CMD window and type:
sfc /scannow

would you recommend doing it in safemode?

You can do on normal mode, Safe mode or even booting from a installation disk, go to repair and open a CMD window.

Code:

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Windows\system32>sfc /scannow

Beginning system scan.  This process will take some time.

Beginning verification phase of system scan.
Verification 100% complete.

Windows Resource Protection did not find any integrity violations.

Is the image on the previous post after shutdown or after boot?

Boot from the installation disk, go to repair - next
It will open a multi choice window. At the bottom you will have two options - Shutdown and restart. Hit Shutdown.
If it doesn't completely shutdown, I would say you have a hardware problem on the MOBo or Power Supply.