Windows 7 Power settings keeps reverting back to [ Balanced Plan ]...

I been noticing lately that every time I open my power settings in the control panel, it shows the "Balanced Plan" ticked despite the fact that I've changed it to "High Performance" several times in the last month. Another thing that concerns me is that usually whenever you make any changes to settings, the "Save" button at the bottom of the page is supposed to be highlighted or (in other words: able to be ticked) but every time I visit my power settings through the control panel, the Save button is never highlighted, so I can't even click on Save even if I wanted to.

I usually just exit the control panel explorer once I made the changes I want, but as I mentioned it seems to just revert right back to the Balanced Plan option upon re-opening of the Power Settings. Maybe the fact that I cannot click the Save Button is the problem.

The only thing I can think of which may ( or may not have ) caused this problem is the fact that I was making several tweaks to the system using the Advanced management options, mostly to shut off options that I didn't need to have running, and to tighten my overall system security, etc, but I don't specifically recall ever coming across an option that would restrict me making changes to the Power settings. In fact, if I did find something like that through Advanced Management options, I would have made sure that "High Performance" was the option I wanted to keep.

The changes I did make were quite some time ago, so I guess its possible that I may have forgotten making any changes relative to this problem but if that is not the cause, then maybe there is a registry adjustment/correction that can be made, but of that I'm not too sure.

Any insight into this issue would be much appreciated. Thank you.