Video playback too dark on Powerpoint

I’m currently using FW 13 with AMD Ryzen7 7840U. I’m having an issue with video playback in Powerpoint. The video appears too dark only when I start playing. Before start, the video is in a normal brightness. This issue only occurs in my FW13 because I can play the same video in other computers just fine with normal brightness. Does anyone have clue how to solve this issue?