There are many reasons... (Score 2, Interesting)

There are many reasons why an IT Department might not elect, or have the ability, to power down or enable power management capabilities of computers. For example one of my environments is used 70-80% of the day and the only time I have to run updates and daily tasks is at night, which leave me almost an intangible window for powering down my machines. And I completely agree with those of you who said not to lay this on the IT Department b/c you are right. Often times we do not have the authority in our organizations to make that decision or our specific environment does not allow for any down time.