Select Formats from the Tree Menu to the left, then press the Video button under Association to associate video files with MPC-BE and click the Apply button to save settings.
If you have a laptop, you need to select your dedicated graphics for MPC-HC if you wish to use shaders and MadVR filters. I don’t have a laptop by me right now, but the power saving option in the screenshot should be the iGPU while the high performa