
The Event IDs in this category are 100 through 110. Now, within the operating system section is a subcategory titled Diagnostic-Performance with an Operational log that contains a set of a Task Category called Boot Performance Monitoring. (Other event log types that can be found in these subcategories are Admin, Analytic, and Debug however, describing them is beyond the scope of this article.) The majority of these subcategories contain an event log type called Operational that is designed to track events that can be used for analyzing and diagnosing problems. Windows 7’s Event Viewer includes a new category of event logs called Applications and Services Logs, which includes a whole host of subcategories that track key elements of the operating system.

Here’s how to use some of the new features in Windows 7’s Event Viewer to investigate a slow boot time.
