I tried @Jimbohalo10 fix Can't create C++ project ( or use C++ ) and sometimes when changing from window (or Fortnite) back to UEFN the PC totally black out. I can not do anything. The computer starts to put all fans to max power and all screens all black and I need to restart it.
I will back again to the older Memory configuration. This fix was far worse than the original problem.
Edit: After changing the memory configuration to the older one, the problem has come back