Applies To

Windows Server 2008, Windows 7

Cause

Event ID 100 indicates Windows has started up and degradation has been detected.  

Details

While occasional degradation is normal, due to software or hardware device driver updates, if you determine that a particular device or application event is being logged on a regular basis and/or results in a continuation of boot time degradation, chances are that there is a problem. Check with your hardware or software provider to obtain updated device drivers or software.  You may also need to trace the boot process to determine the specifics on what is causing performance issues.   See "Tools for Troubleshooting Slow Boot and Slow Logon" for more information.  

The Event Viewer in Windows Server 2008 and Windows 7 includes a new category of event logs called Applications and Services Logs, which includes a host of Windows Performance Diagnostic subcategories which track information such as boot time, standby, hibernate and system shutdown. The task category of boot performance spans the event range .detailed below.

Boot Performance Events 100-110

Event ID

Cause

100

Windows has started up

101

This application took longer than usual to start up, resulting in a performance degradation in the system start up process.

102

This driver took longer to initialize, resulting in a performance

degradation in the system start up process.

103

This startup service took longer than expected to start up, resulting in a performance degradation in the system start up process.

104

105

106

The background optimization operation took longer to complete.

107

The application of machine policy caused a slow down in the system start up process.

108

The application of user policy caused a slow down in the system start up process.

109

This device took longer to initialize, resulting in a performance degradation in the system start up process.

110

Session manager initialization caused a slow down in the startup process.

 

Resolution

Tools for Troubleshooting Slow Boots and Slow Logons

Investigate the root cause of devices or applications which impact slow system boot issues.

 

Using Windows Performance Analysis Tools

Windows Performance Tools are designed for analysis of a wide range of performance problems including application start times, boot issues, deferred procedure calls and interrupt activity

(DPCs and ISRs), system responsiveness issues, application resource usage, and interrupt storms.

Additional Resources