How to Capture Screen Without installing Extra Software
Frist you have to capture your display and make video of it then follow the below simple steps.
Frist open the power point.
Then Go to Select and Click on Screen Recording
After click on Screen Recording it open below image,
If you Select the particular area then select the particular area and then click on record and now screen recording is start.
When Recording starting it see the below image.
You can Pause the Recording and stop the recording by clicking the given buttons.