How Can I Open Log Files in "Crashes" Filder? (.dmp)

My game crashing when I something changing in the game, or when I playing. I want to know whats is wrong and probably this files helps me. Can someone tell me how to open .dmp files in “crashes” folder? I try system “WinDbg”, but with no results.

Don’t know if this is what you were looking for but trying double clicking the .dmp file and select “Select a program from a list of installed programs” and open it in notepad.