You can reset data in the Operating System Statistics window pane. This clears out all previous data, allowing you to track new data going forward
How to reset operating system statistics
Select View>Operating System Statistics.
The Operating System Statistics window pane opens.
A chart is displayed in the window pane, with the data shown below in a grid.
In the local toolbar click .
In the message that displays click Yes.
The window pane is cleared of all data.