ON RAIL CRASH

As I’m going through some tunnels a loading phase begins as I enter the next area on the map bm_c2a2c. As soon as the loading is complete, my game crashes down and I have to ctrl+alt+dlt to exit the game. Does anyone have any suggestions on fixing this issue? Thanks, any help is appreciated.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.