game stop responding on map change

The game stops responding at the map change from c3a1a to the next map. I can not show a mdmp file due to the fact that hl2 stops responding, I have to end the hl2 process in the task manager. I have tried extracting the maps and replace them and that does not work. I have also tried using all the tricks I have learned from playing half life games. and I have been playing them for a long time. about 15 years or so. I do not know if it something with the mod or with my pc.

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.