I turned the computer on and a blue screen came up saying that the computer was not properly shut down. It started doing a scan for errors, what does

If the computer was IMPROPERLY SHUTDOWN by just turning the power switch off on the desktop
or tower case then you will get this message. The system will scan for errors that could have occurred
when the system was improperly shut down.
• To properly shutdown your computer you should ALWAYS go to Start
on the task bar and Shutdown from the pop-up menu.