Can't disable "display power saving technology" on intel HD

Forgive me if this is the wrong place to post this - this is my first time posting to Tomshardware (longtime lurker, first time poster). I can't seem to crack this issue, and I'm hoping you can help.

I'm having an issue with the Intel HD "display power saving technology" - you may remember this awesome feature auto-dims your laptop screen every time the image on your screen is a certain darkness. For example, I made a totally black image the same size as my laptop screen in MS Paint. Then, I toggled full screen and when I moved my mouse cursor off the screen to the right, the screen auto-dims. When I bring the mouse back, the screen brightens up again. This only happens on battery power.

Note: this is NOT an issue with the ambient light sensor - I've disabled everything associated with that.

I've narrowed the issue down to the "display power saving technology" feature in the Intel HD Control Panel. Every search I've tried has suggested that I simply untick this box in the graphics settings, and my problem goes away. The problem is, I don't have this setting available. Other people have said this too, and have been told to switch to the "on battery" mode. I've done this as well, but the selection is still not available (see the screenshot).



I REALLY need to disable this stupid feature - I can't even watch a DVD without the nonstop dimming.

I've also managed to locate a copy of the Intel BMP application, so if anyone can help me edit the video bios, I'd be happy to go that route as well. Thank you!!!!!!