It is NOT there and is a graphics adapter issue. Sure, I'd love to simply change the settings, but the option doesn't exist. And that is the issue at hand. Power option are 'hibernate' and 'do nothing' - that's it.
I have the same problem and I work on these. Problem is I took an HP Vista laptop and loaded Win 7 on it. Only the folks at HP don't support this laptop with W7 on it. There are no drivers. THAT is the issue.