Page 1 of 2 12 LastLast
  1.    11 Aug 2016 #1
    Join Date : Aug 2016
    Posts : 6
    Windows 10

    100% Disk Usage during startup/opening new programs

    Awhile ago, I was still on Windows 7, and my system began to be incredibly slow, especially during startup. I wasn't sure back then what the problem was, or what I had done to make it so slow. I figured it was linked to BlueStacks, and uninstalling it did help a lot. Startup took about 10 minutes, instead of over 30. However, it was still very slow to open programs, right click, and play games. I thought upgrading to windows 10 might help, but I was unable to because of an error. It only worked after I used CCleaner to fix up the registry. Windows 10 allowed me to see the cause of the sluggish behaviour, as task manager reports 100% disk usage during starup. The problem is, no program in the list actually uses the disk activity, and idles around 0.3MB/sec. It was still always 100%, and only started dropping to normal levels after I messed around with skype (see below for the list of things I tried). Now after startup, if left for a long while, it will eventually finish and drop to idle around 0%. But if I open a program for the first time (ie. WoW, Firefox, Documents, Word etc.) it spikes to 100%. For most programs, it will return to 0%, such as firefox. I am able to browse with no problem, but it will occasionally still spike to 100%, though this seems random. It is most noticable when playing games, such as WoW. If opening for the first time, it spikes to 100%. Some time later it will return to 0%. If I log in, or switch zones when playing, open my bags etc, it again spikes to 100% and makes the game almost unplayable, as it freezes until disk usage returns to 0%. It only behaves this way on lowest settings. If I play on max settings, it almost always stays at 100% (my laptop can easily handle max settings btw). Other games are similar, but the less complex the game is, the less spikes happen. Here is a list of things I have tried to fix the 100% disk usage:
    -Turn off tips about windows - no effect
    -Turn off BITS - no effect
    -Turn of prefetch and superfetch - no effect
    -Turned on read/write for skype using the security tab in properties - Disk usage is no longer always 100%, but still spikes as told above.
    -Turned off cloud protection and real time protection for windows defender - no effect
    -Uninstalled/reinstalled nvidia drivers, and geforce experience - no effect, also worth mentioning that when I restarted after uninstalling, the system took almost an hour to startup, disk usage was again always 100%, and took ages to reinstall the latest drivers. After using CCleaner and getting rid of system files/registry cleanup, the system was as before, 0% disk usage, but 100% spikes.
    -Increasing the RAM cache - no effect
    -turning off disk fragment scheduling
    -Disabling all startup programs - startup takes a lot less time, but disk usage is still 100% during startup
    -Disabling all non-microsoft services - no effect
    -Check disk using cmd, no errors reported
    I installed HD sentinel, and it says disk health is at 98%, with 3 weak sectors, but no action required. Disk temperature is also normal, but if disk usage is 100% for long enough, it begins rising, up to 60+ degrees (C).
    Im running out of options, as I've tried nearly everything suggested by google. The only thing that had any significant effect was the read/write enabling for skype, but even that didnt solve the problem entirely. I even tried uninstalling skype, to no avail.
    Please help, the new patch for WoW released, and I really want to be able to play normally. Sorry for the lengthy post.
      My System SpecsSystem Spec

  2.    11 Aug 2016 #2
    Join Date : Aug 2016
    Posts : 6
    Windows 10

    Also, my hard drive is a 1TB HHD hybrid with 16GB SSD.
      My System SpecsSystem Spec

  3.    11 Aug 2016 #3
    Join Date : Aug 2016
    Posts : 6
    Windows 10

    In case its relevant, I checked the windows event logs, and found 4 errors related to disk.
    Click image for larger version. 

Name:	Capture.png 
Views:	39 
Size:	17.6 KB 
ID:	95510
    I also that my net speed drops when disk usage is 100%. So for example, if I refresh a page, the browser waits. The second disk usage is back to 0%, the page refreshes immediately.
      My System SpecsSystem Spec

  4.    11 Aug 2016 #4
    Join Date : Aug 2015
    Posts : 126
    windows 10

    Run >> services.msc >> disable windows search and check.
    if issue still persists please try a clean BOOT.
      My System SpecsSystem Spec

  5.    12 Aug 2016 #5
    Join Date : Jan 2015
    UK, Midlands
    Posts : 5,797
    Win 10 Pro (1607)

    Noted you have tried disabling startups.
    Suggest you run chkdsk

    From an admin command prompt
    [Windows key + X, click command prompt (admin)]
    chkdsk C: /F
    Your PC will need to restart.
    Make sure the result is clear or fixed.
    Post back the result, which you can get after a restart as follows:
    How do I see the results of a CHKDSK that ran on boot? - Ask Leo!

    If you get a clear result or fixed, try booting to safe mode.. any change?
    Beyond that, I'd be suspicious of your HDD. Also depends what you might have lost on failing blocks if those were used.

    Do you have disk images? Strongly recommended here, imaging even allows you to restore your PC to how it was when you created the image should your HDD fail.
    e.g. Macrium reflect (free) + its boot medium + external storage.

    It would be interesting to see if you can create an image successfully - this will fail if there are CRC errors reading your disk - a useful check.
      My System SpecsSystem Spec

  6.    13 Aug 2016 #6
    Join Date : Aug 2016
    Posts : 6
    Windows 10

    I have tried disabling windows search before, had no effect. Here are the results of the chkdsk:

    HDSentinel says disk health is at 98% with 4 weak sectors, no action required.
    CrystalDiskInfo set health status at caution, current pending sector count 4.
      My System SpecsSystem Spec

  7.    13 Aug 2016 #7
    Join Date : Jan 2015
    UK, Midlands
    Posts : 5,797
    Win 10 Pro (1607)

    Ok, marginally suspicious; suggest you try as before creating an image with Macrium. That
    a. gives you a complete backup if it succeeds
    b. is exceedingly god practise
    c. will fail if it finds a CRC failure, which would be significant.

    You could also do a surface test on your disk
    Macrorit Disk Scanner Scan Disk and Check Bad Sectors in Windows Server partition
      My System SpecsSystem Spec

  8.    13 Aug 2016 #8
    Join Date : Jun 2015
    Posts : 10,446
    Windows 10 Pro / Windows 10 TP / Windows 8.1 Pro / Windows 7 Pro

    Hi Reaver,

    Welcome to the 10forums

    I see you ran chkdsk, but not in the way @dalchina suggested.
    Please follow below instructions and provide the requested screenshots/photos so we have some more information about the status of your hard drive.
    I understand you ran chkdsk before dalchina suggested it, but please run it again per the instructions.

    100% Disk Usage during startup/opening new programs Diagnostics Test 100% Disk Usage during startup/opening new programs

    Run SeaTools DOS to check the integrity of your HDD. SeaTools for DOS and Windows - How to Use - Windows 7 Help Forums
    Run the long test.
    Note   Note
    Do not run SeaTools on an SSD as the results will be invalid.

    Make a photo of the result and post it.

    Run chkdsk
    Disk Check - Windows 7 Help Forums
    Use option TWO with parameter /r
    Upload the chkdsk log Check Disk (chkdsk) - Read Event Viewer Log - Windows 7 Help Forums

    Run HDTune to
    • scan for errors, no quick scan but full scan
    • check the health,
    • run a benchmark.

    It may take some time, but please take the time you need to perform it properly.
    When above is done please make screenshots of the following
    • the error scan,
    • the health,
    • the benchmark incl. following
      • transfer rate,
      • access time,
      • burst rate,
      • cpu usage.
      My System SpecsSystem Spec

  9.    14 Aug 2016 #9
    Join Date : Aug 2016
    Posts : 6
    Windows 10

    The scan for errors is gonna take a very long time it seems. Its been going for about 2h with only 2 rows complete. Seems like it needs over a day straight to finish. Will post back the results here if it ever finishes, along with everything else. The scan speed fluctuates between 50MB/s then steadily drops, and disk activity is 100% the entire time, explains the slow progress.
      My System SpecsSystem Spec

  10.    14 Aug 2016 #10
    Join Date : Jun 2015
    Posts : 10,446
    Windows 10 Pro / Windows 10 TP / Windows 8.1 Pro / Windows 7 Pro

    It is known for taking several hours, it depends on how much there is to do and the speed of the drive.
      My System SpecsSystem Spec

Page 1 of 2 12 LastLast

Similar Threads
Thread Forum
100% DISK usage causing slow system startup
For the last week or so my system has been very slow to startup, and during this time the disk shows at 100% usage. It takes at least 5-10 minutes until everything has loaded and disk usage returns to normal and the system is usable. I have...
Performance & Maintenance
Solved High Disk Usage during Startup, slows down my pc
Hi, I just installed win 10 last day, and it was going fine, no conflicts on the drivers whatsoever. But after a day, when I booted up, it seems to have slowed down to a point that everything does not respond to my inputs, though it does after a...
Performance & Maintenance
100% disk usage for OS
Hello, I am running Windows 10 Pro. Over the last couple of days, for some reason, the OS reports 100% disk usage, even when no application is apparently running. It was quite alright a few days ago, but troublesome over the past 2 days. I had...
Performance & Maintenance
Solved Windows programs not opening.
Hello, I have recently upgraded from 8.1 to windows 10 after it finish installing I reset my computer(Via the recovery tab). I then started installing my programs and everything was going well, but when I logged in the next day I couldn't open Task...
Software and Apps
Lag when opening programs
--- revised 2/18/16 --- No further instances of lag (which can also stop macros from completing) since SUPERFETCH was disabled. However, some users report occasional lag despite this measure, and the underlying problem is extant. It appears...
Performance & Maintenance
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 16:00.
Find Us
Twitter Facebook Google+

Windows 10 Forums