Need For Speed Under Cover Won't Work on Vist

Hello, I just bought nfs under cover from a gamestop download and got it all installed properly but now it won't work. I found it under nfs.exe and when I played it I just got a command prompt. I tried restarting the game and the computer and about the 5th time i tried it actually started. I got through 10 seconds of the intro and then it exited because I hit ctrl alt delete but I couldn't get back into it and it crashed. Now everytime I open it I get a command promt for about 5 seconds and then ir crashes and says Need for Speed Undercover has stopped working A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. and gives me an option to close the program. I have tried restarting the computer and the game several times and I can't even get to the begginning again. I Have a new HP with a 250 gb hard drive and 2 gb ram. It's an HP Pavilion Entertainment PC and I only got it 6 months ago. Please Help me