I am using Windows 7 operating system with 1 GB RAM and Core2Duo processor. I have installed NFS Prostreet in my system and the installation had completed successfully without any problems. Infact, the game had also started. When I started the career mode, I was able to see the entry video also. But, I cannot start race events in NFS Prostreet. The same problem is with the quick races too. Kindly help me with some suitable solutions.