Sometimes the projector in a classroom might be on but it is not projecting the way you would like to.
To quickly set this you can press the windows key + P
A pane will appear on the right-hand side on Windows 10. (Shown below.)
The options will appear at the bottom of the screen on Windows 7. (Shown below.)
| PC Screen only/Computer only | Will not display anything on the projector. |
| Duplicate | Duplicates what is on your screen, to the projector. |
| Extend | Uses the projector as a second monitor. |
| Second screen/Projector only | Uses the projector as the main display for your PC. |