Zend certified PHP/Magento developer

starting Jenkins with runas

I am trying to start Jenkins service but via CMD. This service requires specific credentials, because I set up Jenkins to run only with specific account, not as local system account. When I type:

runas /profile /user:user_1 "net start Jenkins"

CMD asks me for password so I type it correctly – when I typed incorrect one for test I received

1326: The user name or password is incorrect.

However even when I type correct user and password I get

Attempting to start net start Jenkins as user "Z1user_1" ...

and uknown window seems to appear for a split second. When I open services it shows that Jenkins hasn’t started. How can I run specific services that requires credentials from cmd? I know I can run CMD as administrator, but I would like to know another way.