The Events settings allows you to change what event types are searched for.

Five types of events can be searched for in the event log.
•Application Error
•Windows Error Reporting
•Application Popup
•.Net Profiler Errors
•Kernel Dump BugCheck. This event is generated in the unlikely event that your computer fails and creates a kernel dump, also known as the Blue Screen of Death.
If you make a mess of the settings and wish to go back to the defaults, you can always Reset the settings.