How to Uninstall Operations Manager
Use the following procedure to uninstall any feature of System Center 2012 – Operations Manager, including the management server, gateway server, Reporting server, operations console, web console, and agent.
To uninstall System Center 2012 - Operations Manager
Log on to the server with an account that has local administrator rights.
In Control Panel, click Programs and Features.
On the Uninstall or change a program page, right-click System Center 2012 - Operations Manager, and then select Uninstall/Change.
When you uninstall a stand-alone feature, the name that appears in Program and Features reflects the name of the feature.
On the Getting Started, What do you want to do? page, click Remove a feature. The Setup Wizard then identifies and lists all the features and roles that are installed on the local computer.
Select the features that you want to remove, and then click Uninstall.
On the Complete, Component removal is complete page, click Close.