Lost all Login Credential to SEPM

Dear Support,

We had a former technician who installed trial license for symantec endpoint protection 14 manager on our server but he is no longer with us. We intend to pay for permannet 10 user license but the problem is that we can't login to the SEPM console becuase no one has the login credentials to the manager.

I intend uninstalling SEPM, SEP and live updates and start installation afresh.

I would like someone to advice if this will be a possible solution to the issues we are having or if there is a better way to resolve this kindly let me know.

Regards

Udensi