Article ID: 950684 - View products that this article applies to.
The steps to troubleshoot performance-related issues in Windows Vista vary depending on the point at which the issue occurs. This article is intended to describe the steps that are used to troubleshoot performance-related issues that occur during startup.
For more information about how to troubleshoot other performance issues in Windows Vista, click the following article numbers to view the articles in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/950685/ )How to troubleshoot performance issues in Windows Vista
(http://support.microsoft.com/kb/950686/ )How to troubleshoot performance issues with standby, hibernate, and resume in Windows Vista
OverviewThis article describes the steps that are used to start to troubleshoot startup-related performance issues in Windows Vista.
Performance issues that you may encounter during the startup process of Windows Vista may include but are not limited to the following issues:
Computers that meet the minimum requirements are known as "Windows Vista Capable," and computers that meet the recommended requirements are known as "Windows Vista Premium Ready." For more information about Windows Vista Capable and Windows Vista Premium Ready computers, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/cc507845.aspxFor more information about system requirements for Windows Vista, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/919183/ )System requirements for Windows Vista
To start troubleshooting a startup-related performance issue in Windows Vista, follow these steps
Step 1: Check the Windows Experience IndexWindows Vista includes a performance rating tool that is named WinSAT. This tool measures the performance of a computer, and the tool gives information about the performance in a way that is easy for the end-user to understand. The performance information about the computer is known as the "Windows Experience Index." You can use the information in this Index to determine what the expected performance levels are for the computer. The information in this Index is based on the rating of each component. When you review the performance rating for the computer, you see an overall score and a sub-score for individual components in the computer. The overall score is determined by the lowest sub-score on the system. Therefore, if the lowest sub-score for a component in the computer is 2.6, the overall score for the system will also be 2.6. This is because the component with the lowest performance in the computer is considered the bottleneck.
When you review this score, you can use this information to determine whether there is a component in the system that may be causing the startup performance issue. When you determine the Windows Experience Index for your computer, you can use this information to correctly set expectations about the level of performance that you can expect to achieve with the current configuration. After you set the expectations, it is important to continue to troubleshoot the issue by proceeding with the next troubleshooting step. This is because, although the computer may have slower hardware, the computer may also have other issues with software configurations that can further decrease performance.
For guidance about how to make recommendations about computer performance that is based on the Windows Experience Index, visit the following Microsoft Web site:
http://windowshelp.microsoft.com/Windows/en-US/Help/f59082f4-6385-4a61-ba7e-2de9625a780a1033.mspxNote If the computer has an overall system score of 1.0 because the video sub-score was 1.0, this overall score may not be an accurate representation of the computer's performance. In order to test the performance of the video card in the computer, Windows Vista Display Driver Model (WDDM) drivers must be installed for the video card. If the drivers for the video card are not WDDM drivers, the sub-score will automatically be recorded as 1.0 because the card cannot be tested for performance.
When you have identified performance expectations by using the Windows Experience Index, go to the next troubleshooting step.
Step 2: Check Windows UpdateIf a driver or an operating system component causes the performance issue, there may be an update that is available on Windows Update that addresses the issue. Visit Windows Update, and install any driver or operating system updates that are available. To do this, visit the following Windows Update Web site
http://windowsupdate.microsoft.comIf you install an updated driver or operating system components from Windows Update, and this does not resolve the performance issue, go to the next troubleshooting step.
Step 3: Check for performance warningsFrequently, Windows Vista can automatically detect any issues that are related to performance and can make recommendations about how to troubleshoot these problems. When this happens, a warning is displayed in Control Panel. To access these warnings, follow these steps:
Step 4: Start the computer in safe modeWhen you start the computer in safe made, you can determine whether the cause of the startup-related performance issue is related to a background service or to a driver.
To start in safe mode, follow these steps:
If the problem does not occur when you start the computer in safe mode, go to step 5.
Step 5: Perform clean-boot troubleshootingIf you verify that the performance issue does not occur in safe mode, start Windows Vista in a clean-boot environment to determine the programs or the services that are causing the issue. This process will systematically eliminate any of the third-party services or applications that are running on Windows Vista that could potentially be the cause of the problem.
For more information about how to perform clean-boot troubleshooting in Windows Vista, click the following article number to view the article in the Microsoft Knowledge Base:
929135If the performance problem continues after you perform clean-boot troubleshooting, go to the next troubleshooting step.
(http://support.microsoft.com/kb/929135/ )How to troubleshoot a problem by performing a clean boot in Windows Vista
Step 6: Check the Reliability MonitorWhen you troubleshoot a performance issue, it is important to determine whether the problem always occurred after you installed Windows Vista or if the problem began sometime after you installed Windows Vista. You must clarify this before you continue.
If Windows Vista was performing acceptably after it was installed, and the startup performance problem only began to occur sometime after Windows Vista was performing acceptably, you can use the Reliability Monitor tool that is included with Windows Vista. This tool lets you examine the events that occurred around the time that the problem began so that you can determine any relationship between the event and the issue. To do this, you must first determine approximately when the issue began to occur. When you determine the approximate time, you can examine the events that occurred around that
To use this tool to troubleshoot a performance issue that began sometime after Windows Vista was installed, follow these steps:
Article ID: 950684 - Last Review: April 18, 2008 - Revision: 1.3