Hey Dataviewer,
I had one of the first laptops that ran dual graphics, a Delll XP L501X, which was back when PDVD9 was out, grayed out choice. The next year I upgradedd to the new model L502X, also grayed out as a choice. I went round and round on this. Best explanation was that the Nvidia driver is modified by the laptop manufacturer and won't allow that selectioin. I tried everything, including buying newer and full version of PDVD licenses, and updating Dell drivers constantly.
Cyberlink said it was Dell manufacturer, Dell said it was Nvidia, Nvidia said it was Dell, and so on. Even Right clicking PDVD and selecting "Run With High Performance Graphics" did not work. If I remember correctly, the only way it worked was if an external monitor or TV was connected with the HDMI port then I could activate Nvidia graphics to run PDVD.
Bottom line - the intergrated HD graphics card will handle any video you throw at your laptop screen (within its resolution). However, if you are pushing that video signal to a TV or other external monitor, the Nvidai software SHOULD allow to select the higher horsepower Nvidia card, but only if using HDMI cable. In fact, Nvida takes over running both audio and video when using HDMI. Make sure when you install Nvidia driver software you select both "Video Driver" and "HD Audio Driver".
Oh, years ago when this was a hot topic I remember reading a thread - something about Dolby not being licensed on the specific hardware device inside the Dell laptop, thus the restriction. took it with a grain of salt, but had some merit.
This message was edited 3 times. Last update was at Jul 03. 2016 13:39