Mass Effect Won't Work

Hey hey! Recently re-installed my Mass Effect on a new Alienware computer. Worked perfectly on my last computer, but for some reason it won't launch now. Uninstalled and re-installed a couple of times, uninstalled and re-installed Origin a couple of times too, but whenever I try to launch Mass Effect, it says, "Game Launching", that window dissapears, and then nothing happens. Please someone help this technologically disinclined individual!