Use Windows Reliability Monitor to fix PC problems

Rather than downloading third-party tools for diagnosing and fixing your Windows PC problems, it’s best to use built-in programs, when available. Windows Reliability Monitor in Windows 10/8 is one such built-in tool that can be used for checking system errors, warnings, informational events and other critical events that can help you fix problems in Windows.

Windows Reliability Monitor

Windows Reliability Monitor

The tool is special in a way that the events which are normally noticeable by users can be picked up by the program and provided in the form of a graphical layout, pinpointing when an issue occurred and for how long it has been occurring. The graph goes down whenever the computer experiences a problem, like software not working or a driver crashing, unexpectedly. Reliability Monitor presents the data in the form of a line chart that provides a system stability overview with detailed information about individual events that may affect the system’s overall stability. By combining what Reliability Monitor logs, and the Events Logs and is detailed in problem reports you are further along in finding out what is causing Windows problems.

Reliability Monitor provides a system stability overview and trend analysis with detailed information about individual events that may affect the system’s overall stability, such as software installations, operating system updates, and hardware failures. It begins collecting data at the time of system installation.

Under ‘Settings’ search option type reliability to open the Reliability Monitor. Alternatively, you may open the Run box, type perfmon /rel and hit Enter. Click any event on the graph to view its details. The stability index assesses a system’s stability on a scale from 1 to 10. By selecting a specific period in time, you may review the specific hardware and software problems affecting your system.

Via the Control Panel, you can also click Performance Information and Tools and click Advanced Tools in the left-hand green pane; you can open the Reliability Monitor. This new feature gives your computer a reliability score out of 10. This figure goes down whenever your computer experiences a problem, such as a piece of software not working or a driver crash. This helps you identify what causes your computer problems for any particular event. Do also note the System Stability Index that it computes for your machine, in the top RHS corner. It takes into account Software UnInstall Issues, Application Failures, Hardware Failures, Windows Failures & Miscellaneous Failures.

By default, the program displays the days of the current month and issues showed up each day. Issues displayed by Reliability Monitor are classified or categorized into following categories:

  1. Application failures
  2. Windows failures
  3. Miscellaneous failures
  4. Warnings
  5. Information

If you want, you can easily switch views from ‘Days’ to ‘Weeks’ by clicking on the link highlighted in Blue. If not, chose the desired day on your Reliability Monitor. This action will provide details pertaining to that issue of the day. You can easily find the underlying cause and correct the problem then. For checking technical details of the problem, click ‘View technical details’ link under the ‘Actions’ column of the corresponding problem.

On clicking the link, a ‘Problem Details’ window pops up on your computer screen displaying date and time of the related problem along with a technical description of it. This information may reveal the error code that might come handy while looking for a software or app in question. You can then search this site or the Internet for a potential solution.

Generate Reliability Monitor System Health Reports

To generate Reliability Monitor System Health Reports, open Run, type perfmon /report and hit Enter. In a minute or so, a PC health report will be generated which will give you a lot of information. You can read more details here. In case you do not see any reports, make sure that you have enabled Data Collection for Reliability Monitor


Here are shortcuts you can use via Run:

  • perfmon /rel : Runs Reliability Monitor
  • perfmon /report : Generates System Health Report
  • permon /sys : Runs a Standalone Performance Monitor

If for some reason you find that your Windows Reliability Monitor is not working, you may try to reset it and see if it helps.

How to use the Performance Monitor and the Resource Monitor may also interest you.

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Anand Khanse is the Admin of, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.