Vista Reliability Monitor

Another new feature in Vista is the Reliability Monitor, which has been added to the Performance tool that you may be familiar with from Windows XP. When you try to open the Reliability and Performance Monitor from the Administrative Tools menu, you'll be prompted for elevation of privileges. Then in the console, click Reliability Monitor in the left pane and you'll see the System Stability Chart and System Stability Report in the right pane. Here you can see a history of hardware and application failures, software installations and uninstalls and other reliability-related information. This makes it easy to see if, for example, the installation of a program or driver corresponds with the time you started to experience application failures. You can see a screenshot of the reliability monitor here:
http://www.howtogeek.com/howto/windows-vista/use-windows-vista-reliability-monitor-to-troubleshoot-crashes/