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SleepStudy\UserNotPresentSession.etl being written to constantly

Anonymous
2018-01-18T16:39:49+00:00

I'm having problems with Windows 10 Pro constantly writing to C:\Windows\System32\SleepStudy\UserNotPresentSession.etl causing my disk resources to run at 100% all the time, mostly all of which goes to C:\Windows\System32\SleepStudy\UserNotPresentSession.etl   if and when nothing else is being done.

I only noticed this because I'm in the midst of re-installing a fresh copy of Win 10 to a new drive, because my

previous C: drive is toast (probably due to 2 years of this SleepStudy activity cooking my hard drive - which was

a Western Digital black 2 TB supposedly good for a minimum of 5 years).

I reviewed the following answers.microsoft.com entry ...

     https://answers.microsoft.com/en-us/windows/forum/windows\_10-files/microsoft-sleep-study-writing-all-over-c-drive-an/dc2d814c-5302-4978-a37f-f69f491f3996?auth=1

  and made the following changes to my system to try and fix the issue

  * set my power options to the max settings

  * disabled all StartUp programs

  * rebooted  

This made no difference, my system still always runs at 100% disk usage. Almost all of which goes to  

  C:\Windows\System32\SleepStudy\UserNotPresentSession.etl. I have attached a Resource Monitor snip to show the disk activity here ...

Is there a fix for this?

Windows for home | Windows 10 | Performance and system failures

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  1. Anonymous
    2018-01-20T16:25:08+00:00

    Don't think safe mode and clean boots will solve the issue. The constant writing to C:\Windows\System32\SleepStudy\UserNotPresentSession.etl  now occurs intermittently. The first 20 boot cycles or so after my initial Win 10 install, it was there every time, forcing my disk activity to 100% for the entire session. I have since found and followed the recommendations in the following article ...

    https://forums.overclockers.co.uk/threads/sleep-study-cpu-usage-and-system-interrupts-in-windows-10.18778176/

    which suggests:

    • use perfmon to Stop the UserNotPresentTraceSession
    • mark files in C:\Windows\System32\SleepStudy read only
    • reboot

    Now it only appears once in a while after a reboot, and when it does my disk activity runs at 100% for the entire session. I'm not sure what causes it, but I'm pretty sure it's related to something that happened in the previous session. As the poster for the above article states, Win 10 has a few remaining bugs in it's sleep study.

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  1. Anonymous
    2018-03-28T07:58:01+00:00

    What worked for me is removing the SleepStudy folder with PCHunter.

    And then make a symbolic link with the same name to my ramdisk (use command line mklink /D SleepStudy R:)

    I was expecting my ramdisk filling up with these files but sleepstudy seems to have stopped making these files totally :)

    So probably making a symbolic link to anywhere else on your hard disk would work also...

    Hope this works for you.

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  2. Anonymous
    2018-01-18T23:44:14+00:00

    The drive is not fragmented. It's a brand new drive. The partition Windows was installed to was preformatted (using the extensive format option - NOT a quick format) immediately before the fresh Windows 10 install was performed.

    I just ran SFC and it found no problems.

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  3. Anonymous
    2018-01-19T01:33:01+00:00

    If that's the case, kindly restart your PC in safe mode from the sign-in screen. Safe mode starts Windows in a basic state, using a limited set of files and drivers. Here are the steps:

    1. When you get to the sign-in screen, hold the Shift key down while you select the Powericon > Restart.
    2. After your PC restarts to the Choose an option screen, select Troubleshoot > Advanced options > Startup Settings > Restart.
    3. After your PC restarts, you'll see a list of options. Select 5 or F5 for Safe Mode with Networking.

    If the PC works fine, that means that a third party software update or program might have caused the issue. To resolve it, we recommend that you perform a clean boot. A clean boot is performed to start Windows by using a minimal set of drivers and startup programs. To perform a clean boot, kindly follow the steps provided in this link.

    If the the issue persists, kindly get back to us.

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  4. Anonymous
    2018-01-18T20:24:26+00:00

    Hello Jim,

    Changes made prior to the dispute, or the problem with your C: drive might have resulted to the present issue. You may improve your PC's performance by defragmenting your hard disk. To do so, follow these steps:

    1. Select the search bar on the taskbar and enter defrag.
    2. Select Defragment and Optimize Drives.
    3. Select the disk drive you want to optimize.
    4. Select the Optimize button.

    If the issue persists, we recommend that you run the Deployment Image Servicing and Management(DISM) tool. DISM uses Windows Update to provide the files that are required to fix corruptions. Kindly run the System File Checker (SFC) tool as well to ensure that your system has no missing or corrupted system files

    Kindly check if that resolves the issue.

    Your response to the solution will be appreciated.

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