In BDL4550D, Fusion's custom rotation must not be used, but rather, the screen's rotation need to be used.
If you've already set Fusion's Custom Screen Orientation to other than default and can't navigate through the setting to change it back to default, follow the following screenshots to find your way around.
Press OK button to bring up the Fusion Settings Menu
Navigate down to settings, then press ok to bring the settings menu up.
Navigate down, down, down (3x) and press the OK button to bring Custom Screen Orientation sub-settings
Navigate up, up, up, up and press the OK Button to change the orientation Custom Orientation Setting to default setting.
Now you need to set the Screen's System Orientation to Portrait
Press Home Button
Navigate to Configuration 2 (press down, down down - if you can't see the menu anymore)
Press OK (You're in configuration 2 area now)
Navigate to System Rotation (press down, down, down - if you can't see the menu anymore)
Press OK (You're in System Rotation now)
Navigate up and down until you can see the OSD menu correctly again.
Please note that if the screen is mounted in portrait, it need to be mounted in the correct orientation (see below)