So assuming your install directory c:\users\mrhob.virtualenvs\torchy-fl7c4wvq\lib\site-packages\torch has a _C.*.pyd on Windows (with * something), which is should be loading, I seem to recall that Windows might have a rather opaque and uninformative error message when one of the dependency DLLs cannot be found.
How did you install? Generally the anaconda method seems to be the most reliable and most tested. (Even though I must admit I invariably use pip3 without virtual env.)
Best regards
Thomas