Hey guys i just downloaded 911 first responders with the la mod v2.1 on my new computer. I have a hp slimline with windows 7. When i go to play the la mod everything loads and works fine except my screen is black. I can still see the red lights flashing on the fire station when it starts still have the list of fire trucks police ambulance ect and still have the little map in the right hand corner. Everything seems to be running fine i just have a black screen and never had this problem on my old computer. How can i fix this?