Posted 05 July 2011 - 12:01 PM
hmm... I would think if it was simply something going to sleep, it would wake up for you. It's possible that it's freezing up on you.
What are the specs? Ram? etc...
You should be able to right click the desktop and select properties or display settings, or something of that nature. Then look at the screen saver options. Then near the bottom, power saving options or something of that nature. From there, you can set when and if things go to sleep. In the past, I usually had it so my HD NEVER go to sleep. If you're going to be running it, actually running things overnight, you'd want it set that way I would think.