@indianacarnie, thanks for the reminder about the Express Gate function which I forgot about.
Anyway, I haven't worked with the G74Sx too much, so hopefully someone can correct me if necessary, but below is more information about it.
1. You access 'Express Gate' through the 'ROG'/function button next to the power button when the notebook is turned off.
a. 'Express Gate' actually shows up under Windows 'Programs and Features' (or add/remove programs as some may think of it) and can be updated by downloading and installing a newer version from the ASUS G74Sx download site.
If it doesn't work at all, make sure you see the 'ExpressGateCloud' program installed under Windows Programs and Features.
2. The ROG/function button is 'dual-function' and has a different function in Windows which is also different for 3D and non-3D models according to the user manual.
a. For 3D models it "Toggles to activate the 3D mode function and again to switch back to 2D mode. This function is only available when playing a 3D video game or watching a 3D movie."
b. For non-3D models it "Toggles “Splendid Video Intelligent Technology” function ON and OFF. This allows switching between different display color enhancement modes in order to improve contrast, brightness, skin tone, and color saturation for red, green, and blue independently. The selected mode is shown on the display."
The ASUS Splendid utility may also be accessed through the Fn+C key combination, and make sure you see the ASUS Splendid Video Enhancement Technology program installed under Windows Programs and Features if it doesn't work, or download it from the ASUS G74Sx download site if necessary.
If anybody feels like debating it, Express Gate and Splendid are probably not too popular, but you may want to give it a try to decide for yourself.
Below is a screenshot from the G74Sx user manual if anybody is interested.