# Starting or Stopping a Notebook Instance

You can stop unwanted notebook instances to prevent unnecessary fees. You can also start a notebook instance that is in the Stopped state to use it again.

Log in to the ModelArts management console. In the left navigation pane, choose DevEnviron > Notebooks to switch to the Notebooks page. Perform the following operations to stop or start a notebook instance:

- To stop a notebook instance, locate the row where the notebook instance resides and click Stop in the Operation column. Only notebook instances in the Running state can be stopped.
- To start a notebook instance, locate the row where the notebook instance resides and click Start in the Operation column. Only notebook instances in the Stopped state can be started.

Parent topic: Managing Notebook Instances