I guess you have a laptop with dual graphic cards? Usually Laptops with high end graphic cards (like Nvidia or AMD) have a second video card for non-graphic intense applications (usually an Intel HD). If this is the case the system might not recognize Dragon Saga as a graphic intense game and uses the Intel Video Card for it.
You need to add the game manually. I can't tell how exactly this works because it differs from system to system and driver version to driver version. I would recommend a google search for "use nvidia graphics card instead of intel" for example. You should find some manuals how to achieve this.
Good luck.