Power Hour Activation Code Why Does This Server Shutdown?

Why does this server shutdown? - power hour activation code

I built a machine with the following characteristics
ASUS P5NSLI
PCI VGA vid
PCI NIC
SATA HDD
Your operating system and Server 2008
Now I have everything the screen and keyboard and mouse
only a few options
then separated from the monitor (VGA 15) and the keyboard and mouse have
ran for a few hours I could find on the net
but his account has been closed

Why then is closed (by the way, where Windows Server is not yet active)
and if the power
I see the black background, and women's Message (real assets)
I wonder whether the activation has nothing to do with the closure of

or is it part of my hardware has a problem
(from the same material object running on another computer with different operating system)

Thanks in advance