Check if the Service account has the required rights to run the services. Try updating the user name and password for the service once again and restart the service.
@AditiA Have you looked at the event viewer logs for errors? Have you looked at the Cognos logs? It is going to be challenging to help troubleshoot without more information. If you don't want to sanitize and post those logs to the forum I suggest opening a ticket with Flexera support to assist you.
