I installed Windows 8 along with the Boot Camp drivers on my iMac. I'm having a problem with the display brightness staying at either 0% or 10%. If I change it using in any method, either the keyboard or the slider charm, it will go back to 0% or 10% within two seconds of changing it. Is anyone else experiencing this issue? I didn't have this issue with the Developer Preview so I don't know why it would do this with the Consumer Preview. I can't find any settings for auto-dimming.