How to force stopped, Postgres Connection Error showing since hours "FATAL: The database system is starting up..."

Question

I have postgres database setup on a Windows Server 2019 VM. I have upload some big data(~50 GB) through python script. I have seen data uploaded through pgadmin in tables.

Then due to some other issue I have restarted the VM and since then I am getting this error in connecting postgres sql server.

"FATAL: The database system is starting up..."*

I have seen the other posts saying this is not an error and it will be gone when in-memory buffers from WAL will applied to disk. Postgresql fatal the database system is starting up - windows 10

I have waited for 24 hours, but its still showing same message. I tried to restart the service through the cmd but restart failed and error still persist.

pg_ctl.exe restart -D  "C:\Program Files\PostgreSQL\13\data"

It does not seems writing anything on disk as I do not see any difference in disk size.

How can I force stop this and login to my server without loosing the already stored data.