Windows 7 Enterprise 64-bit Freezes at Night

[pjamme]

I have been running the same program for over a year.  Within the last ten days or so the computer will not show the screen when I turn on the TV in the morning.
I am wondering if a Windows update is the culprit?
Hibernate and Sleep are turned off as well as Power management on the NIC.  When I touch the power button the computer (HP XW4400) shuts down.
Or is it a hardware issue developing?
Video Card is Radeon HD7700 Driver 8.980 6/11/2012

[admin]

please contact live chat so they can assist.

[pjamme]

I woke up in the middle of the night and said:  "I bet my schedule has expired, that is why the screen is black!".

[admin]

yep, sounds like u got it

[ANOOP]

Oh man.. thats a reminder to me also need to extend the schedules of some screens