Windows 10: File Explorer slow and Start menu icons not highlighting after update

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  1.    22 Nov 2017 #1

    File Explorer slow and Start menu icons not highlighting after update

    Since the big update on Sunday (for me anyway), whenever I use File Explorer, it takes ages to do anything. I can double-click a folder, and it will take about 5 seconds to open it. Even when it opens it, I often get "Working on it" for a few seconds before the files show.

    As often as not, when I double-click, nothing happens at all. Sometimes it opens the textbox to rename the folder (despite me double-clicking), sometimes it just doesn't do anything.

    This happens on both of my disks, one of which is an SSD, so it's not like the device itself is going slowly.

    Also, when I open the Start menu and hover my mouse over an icon, the icon is not highlighted. Sometimes it highlights the icon above or below, sometimes not.

    As you can imagine, this is making working with the machine very difficult.

    Anyone any ideas?
      My ComputerSystem Spec

  2.    22 Nov 2017 #2

    P.S. The more I use this machine, the more everything seems to be dragging. I just tried opening Task Manager, and it took about 2-3 minutes before the window was ready. I could see it painting the various bits of the window as it went along.
      My ComputerSystem Spec

  3.    24 Nov 2017 #3

    What you can do to troubleshoot that the right way and get answers to your problem is;

    - Download and Install windows Performance Toolkit Windows ADK downloads - Windows Hardware Dev Center . Choose the package corresponding to your Windows version.

    - When the problem occur, start recording a trace using Windows Performance Recorder using these options: -

    - While recording the trace, try to work on your system for about 2 minutes. Then click the save button and give your file a name.

    - Compress the resulting file

    - Share it through Free file transfer, send large files - TransferNow or any other file sharing platform.

    I'll analyze your trace file and give you a feedback.

    See you
      My ComputerSystem Spec

  4.    24 Nov 2017 #4

    Please also post a screenshot of your task manager so we can see there's no basic issue in terms of CPU, RAM or disk use.
    To post a screenshot please use the Insert Image icon above your post to the left of the video icon. Then Browse to your image, select it and upload it. E.g. png, jpg. Thanks.

    For more guidance
    Take Screenshot in Windows 10 General Tips Tutorials
    How to Upload and Post Screenshots and Files at Ten Forums Tutorials

    One problem some people fact with this major upgrade is that the change in drivers (all are reinstalled) may mean they receive a driver which no longer works properly. On a purely intuitive level (i.e. no proof) this is something to be aware of.

    A couple of people have needed to use an older graphics driver, for example, noting you mention the time to paint a GUI.

    How much free space do you have on C: ? If your disk is too full, this can slow things down. (Windows.old will have been created so some 20Gb or so space will have been used- cleared automatically in 10 days)
      My ComputerSystem Spec

  5.    26 Nov 2017 #5

    Thanks to both of you for the replies. I was actually just about to report back that I found out what the problem was.

    Last Sunday afternoon I installed Hyper-V, and immediately started with the CPU issues. As Windows was driving me mad about the update, I assumed it was related to that, especially as the problems persisted after restarting. It never occurred to me that just installing Hyper-V would affect the system - at least not until I created a VM.

    When the light bulb eventually went on, I uninstalled Hyper-V, restarted, and everything works fine.

    So, nothing to do with the update at all, everything to do with Hyper-V, which has been removed from my PC, never to return!

    However, zinou's tips about analysing performance are well worth noting in case I have an issue in the future.

    Dalchine, I should have added some vital statistics. Will remember that for the future.

    Thanks again
      My ComputerSystem Spec

  6.    26 Nov 2017 #6

    Thanks for letting us know. Symptoms can have multiple potential causes.
      My ComputerSystem Spec

  7.    29 Nov 2017 #7

    Hmm, looks like I spoke too soon. The machine is grinding along again.

    I used the performance recorder, and have a file for you to check. This is around 2 mins, the last 30-60 seconds of which I wasn't doing anything other than navigating the file system using File Explorer. It was going really slowly, taking a while to open folders (if it did at all, sometimes it interpreted my double-click as a single-click, sometimes as two single-clicks).

    Please see if you can see anything suspicious. Thanks.

    Would you mind explaining what you're looking for. I had a quick look myself, but couldn't really work out what I was supposed to do. Didn't help that the Getting Started info in the Performance Analyser did't match what I saw in the window. It said to click File -> Configure Symbols, but there wasn't such an option. The Trace menu had a Load Configure Symbol Paths option, but it didn't seem to fit exactly with what I saw. I'd like to be able to do this myself.

    Last edited by Yossu; 29 Nov 2017 at 13:44.
      My ComputerSystem Spec

  8.    29 Nov 2017 #8

    Are Volume Shadow Copy Enabled in the services ? If yes disable it and give it a try.

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      My ComputerSystem Spec

  9.    30 Nov 2017 #9


    No it's not running. It's startup type is manual, and right now it's not running.

    The odd thing about those graphs is that, as I said earlier, during the last 30-60 seconds of the trace, I was only using File Explorer and nothing else, but it was grinding along really slowly. The graphs don't seem to show much during that time. I can see lots of things happening earlier, which was also slowing the machine down, but I'm puzzled why they don't show anything for that last bit.

    Thanks for your help. Any other ideas?
      My ComputerSystem Spec

  10.    30 Nov 2017 #10

    Just noticed that the high CPU periods are often associated with a System entry in the Task Manager...

    Click image for larger version. 

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    When I took that screenshot, it wasn't using much CPU, but it does sometimes. Any idea what this is and why it would use so much CPU?

    Thanks again
      My ComputerSystem Spec

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