In this article I will show you how to use “Windows Performance Toolkit” to make a trace of Windows boot sequence, in order to troubleshoot slow logon.

First of all, you need to download the Software Development Kit (DSK)

After running the sdksetup.exe you should select one of the following options:

SDK setup

The first option will install Windows performance tool kit on the computer running the setup. The second one, will allow you to download an offline setup files that can be executed on an other computer.

For our purpose we will chose the first one.

Click next and accept the license agreement.

SDK setup 01

Click on “Windows Performance Toolkit” and then install.

Reboot your computer to finish the setup.

To make a trace of your boot sequence, type “wpr” from the windows start menu and then click on “Windows Performance Recorder”.



On the “Performance scenario” menu choose “Boot”.

Type “1” for the numbers of iterations and then click the sart button.


Select the path where the trace file (.etl) will be saved and click on the “Save” button.


After you click on the OK button your system will reboot and “Windows Performance Recorder” will record all the boot phase.

After you open your windows session WPR will end the trace and will save the file in the specified path.


Generaly the trace file will be a hundred of Mb till Giga bytes.

So if you want to share your trace or send it by e-mail, don’t forget to compress it.

Get Free Instant Access To Windows Troubleshooting Course

Signup now and receive an email once I publish new content.

I will never give away, trade or sell your email address. You can unsubscribe at any time.

Spread the love

5 thoughts on “How To Use WPR To Record Windows Boot Process”

  1. Hello, Is there someone who can help me tell me what needs changed or fixed that is causing slow boot if i give you the WPR results file and how do i give you that file so you can look at it.Or where do i submit it to please give link.Thank you..

      1. Hello,
        Thank you very much hope this link works for you.
        This Desktop Computer does not have a SSD.
        Boot time takes about 48 seconds to get to the desktop at other times more or even more and depends on if updates being applied.
        I have followed info from here for clean install and tweak for best boot time and performance.

        Boot Trace file 50mb

        1. At first glance it seems that the delay is caused by your ATI Radeon driver (atikmpag.sys).
          The “Winlogon init” phase took more than 47s. And when looking at the origin of the delay in the CPU Usage (Precise) graph, I see the the LogonUI Thread 3732 wiating 32s on graphical operations to complete. And these functions are calling other functions inside atikmpag.sys module!

          When you look at the “Images Graph” you can get the driver version which is

          If you’ve upgraded from Windows 7 or 8 to 10 it can explain the issue.

          So, Update your graphic Driver and take another boot trace to see if there any improvement !

      2. Thank you,
        I formated the computer and installed win 10 on this desktop.
        Regarding the driver the ATI Radeon This computer does not have a separate graphics card.
        The ATI is part of the processor.
        Not sure where to find updated driver.
        This is a hp desktop computer.
        When i go to device manager and on display adapters it says AMD RADEON 6550D
        DRIVER DATE 8-21-2015
        DRIVER VERSION 15.201.1151.0

Comments are closed.