It helps you proactively monitor performance, security, and reliability by identifying common issues—such as storage, battery, or system problems—and providing actionable recommendations to keep your Windows device running smoothly and securely.

Use the Performance widget to easily monitor your PC’s performance while you’re gaming. This lets you know in real time whether your system has enough resources for game-intensive moments or if something might be affecting it.

Learn how to use the PC Health Check app to help you improve your device performance.

Describe an issue in which you cannot access the Performance Monitor (Perfmon.exe) on a remote computer.

To help diagnose and resolve many of these issues, you can use the Microsoft PC Manager app, which provides tools to clean up storage, manage startup apps, and optimize system performance. Download PC Manager app. This article lists several solutions that may help improve your PC’s performance.

Fixes an issue in which a data collector set in Performance Monitor does not collect all required performance counter data. This issue occurs in Windows 7 or in Windows Server 2008 R2.

To change the brightness on an external monitor, use the buttons on it. Some PCs can let Windows automatically adjust screen brightness based on the current lighting conditions. To find out if your PC supports this: This automatic setting helps make sure your screen is readable wherever you go.

To configure Performance Monitor logging, follow these steps: Click Start, click Run, type the path of the Debug Diagnostics Tool, and then click OK. On the Tools menu, click Options and Settings. On the Performance Log tab, click Enable Performance Counter Data Logging, and then click OK.

When you use Performance Monitor to view Windows binary performance log files (.blg) in Windows 8, Windows Server 2012, Windows 7 Service Pack 1 (SP1), or Windows Server 2008 R2 SP1, the average value that is computed by using the data in the log file for certain counter types is incorrect.

PSSDIAG is a general purpose diagnostic collection utility that Microsoft Product Support Services uses to collect various logs and data files. PSSDIAG can natively collect Performance Monitor logs, SQL Profiler traces, SQL Server blocking script output, Windows Event Logs, and SQLDIAG output.