I have set up power save for 20 minutes. If I don't have a screensaver running then both PC and Screen go into power save mode after that time. But if I have the screen saver running then it does not go into power save at all, ever.

If I stop screensaver (by moving the mouse) and go to the Login Page then it also goes into power save mode.

Any ideas what I have done wrong with the set up? Should power save mode work when a screensaver is running, if so how do I create this.

This is a new PC and is the first time I am running Windows 8.

Thanks in advance.
Bob C