▉ Problem : Brightness of display keeps changing automatically
▉ Mac Pro version : Mid 2009
▉ OS version : Windows 8.1
▉ How to fix :
- Step 1: Click the Power Icon in your right bottom of the desktop.
- Step 2 : Click [Change plan settings] that right of [High Performance] Option.
- Step 3 : Click [Change advanced power settings].
- Step 4 : In [Display] → [Enable adaptive brightness], set the [Plugged in] as off.
