Error when trying to remove server roles in Dynamics CRM 2013

Error: Failure: The current user does not have required permissions (read/write) for the following Active Directory group: CN=ReportingGroup {94a899b0-954f-447d-86c9-7ac7bd0a081d},OU=CRM 2013,OU=Applications,DC=corp,DC=erac,DC=com

Cause: The user does not have the required permissions.

Solution: Provide Full Control permission for the user running the setup.

Full Control on the Reporting Group
Full Control on the PrivReporting Group
Full Control on the SQLAccess Group
Full Control on the PrivUser Group

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Error: Check SqlServerAgentValidator : Failure: SQLSERVERAGENT (SQLSERVERAGENT) service is not running on the server

Cause: The user who is running Setup does not have local administrator permissions for the computer on which Microsoft SQL Server is running.

The SQLSERVERAGENT service is not running on the specified computer where SQL Server is running.

Solution:
Add user to the local Admin group on the SQL Server
Start SQL Agent service
Add the user in SQL Server and give sysadmin role