Without seeing the code that would be hard.

Does your model have external code like a DLL that it needs?

eef

What version of OpenModelica do you have? Works fine for me with the nightly-builds.
Does this happen for any model you try to simulate? Try MSL examples.

Looking for the error with Google:
https://www.google.com/search?q=%22-1073741819%22
seems you get File System Error which means you cannot
run the executable, or you don't have the permission to run it.
OpenModelica will generate C code, compile that C code to
an executable Model.exe and then run that to produce the
simulation results. It seems you have issues when running
Model.exe

It could be that you are not allowed to run things in the Temp
directory. You can change that via:
OMEdit->Tools->Options->General->Working Directory
Put there something like:
C:\OMWorkingDirectory
Restart OMEdit and try to simulate your model again.

i use the 3.2.3 version
no it does not happen for any model. I think , its occurs , when i try to use the Electrical.Quasistationary  bib

"
You can change that via:
OMEdit->Tools->Options->General->Working Directory
Put there something like:
C:\OMWorkingDirectory "">>>> yes it worked fine , thanks