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Help fixing corrupted system files, 100% disk usage and explorer crash on startup in Windows 8.1

I have a Lenovo y510p with a
Core i7-4700MQ CPU
8 GB of RAM
and a 1 TB hardrive


For some time, my computer has been experiencing problems whenever I restart it. Although it performs mostly adequately when it actually gets up and running, I am experiencing a number of problems upon startup. Both during startup and at many other times during regular usage, my disk usage reaches 100% and everything begins to slow down. Also, during nearly every startup, explorer.exe will become unresponsive and crash before returning. This often happens 2-3 times before it finally stops crashing.

I've tried doing a chkdsk and also performed a system refresh about six months ago (I got my computer brand new about a year and a half ago). However, these problems continue to persist. Just today, I was attempting to update my system regularly through windows update, but received an error message. After searching for a solution to the problem, I ran a system check through the cmd.exe and received this message.



I navigated to the log file but can't make any sense of it. (The log file is very long and almost 50 MB, so I attached it).
http://

Any help with this problem would be greatly appreciated as it has been frustrating me for quite some time now.
5 answers Last reply Best Answer
More about fixing corrupted system files 100 disk usage explorer crash startup windows
  1. "My disk usage reaches 100%"..
    Can you elaborate? you mean you HDD fills up? that would explain a lot...

    Cheers
  2. yoji said:
    "My disk usage reaches 100%"..
    Can you elaborate? you mean you HDD fills up? that would explain a lot...

    Cheers


    Thanks. Yeah I mean that when I open task manager and am looking at the different usages, the disk usage reaches 100%. So not the HDD filling up. It says the "Total utilization across all physical drives".
  3. Best answer
    Sorry to hear that. I've been seeing something similar, which I think is a disk hardware problem. To check if you are having the same problem, start PowerShell and enter the following command:

    Get-EventLog System -source Disk -Newest 100

    If you are getting lots of disk events, its generally hardware related, but Windows 8.1 seems to be handling them poorly, which may be different from older OS versions.
  4. Drezden_Slayer said:
    yoji said:
    "My disk usage reaches 100%"..
    Can you elaborate? you mean you HDD fills up? that would explain a lot...

    Cheers


    Thanks. Yeah I mean that when I open task manager and am looking at the different usages, the disk usage reaches 100%. So not the HDD filling up. It says the "Total utilization across all physical drives".


    I had the same issue a few weeks ago. I tried everything people had suggested here (especially, the "Bandaid" type of fix such as 'disable' this and that), none was really working. Some methods worked for a few days, and the problem reoccurred. I believe my real issues were the corrupted .NET Framework update files. By the way, if your system was working fine until after a few Windows updates, it was most likely because some of the update files were problematic; uninstalling them (and avoid re-installing them until they get fixed) would very likely resolve the issues. So, try the following first and see if you can finish it cuz I couldn't, and I ended up restoring my system; luckily, I had all my files backed up. So, when I restored the factory image and then restore all my backed up files, everything worked as good as new again - no more 100% disk usage.

    Anyway, here are the steps:
    1) click on the flag icon on your task bar,
    2) click on the Open Action Center
    3) click on the Windows Update link
    4) click on Troubleshooting - Find and fix problems - and let it run its course.

    If there's any issues there, Windows will tell you how to proceed to get it resolved. If somewhere in the chain process you get an error code in Hex number that looks similar to this format: 0x800Fxxxx, Google this error code to find a solution to it. I found the answer to my error code, but I couldn't complete it because my system froze in the middle of the process.

    If it can't find any issue there, but your system is still at 100% disk usage, try to remember the date when the issue started and

    And if all of this still doesn't resolve the issue, you might want to
    My system is Dell Inspiron 11, 3000 Series with 500GB drive and 8 important application programs already backed up to my external drive, and it only took me about 2 hours to complete the restoration of factory image, the reinstallation of applications, and the restoration of the backup files. The files backup by itself might run from 30 minutes to a few hours depending, of course, on their number and size.
  5. Drezden_Slayer said:
    I have a Lenovo y510p with a
    Core i7-4700MQ CPU
    8 GB of RAM
    and a 1 TB hardrive

    I'm just wondering if you ever tried starting it up in Safe Mode and see if the explorer.exe is more stable or not.

    You said you had tried refreshing your system as well. Did you notice whether or not it ran better immediately after that and before you installed any of the Windows updates? If it did run better, then the problem must be caused by one or more updates. If you have an option of choosing which updates to install, try to install just a couple of them at a time, restart your system and observe. If the system is still running well, continue with adding updates and restarting your system. If now your explorer.exe doesn't crash anymore, and the only problem is the 100% disk usage, try this:

    The latest Windows security updates, .NET Framework bundle (about 121 of them), will take some time to completely get acquainted with your system after the installation.

    When I restarted my system the next morning, I noticed that it went up to 100% usage for about a couple of minutes and dropped to an average of about 15% all the times. I've monitored my system for several hours while I was running different applications and see no more high disk usage.

    With regard to my previous response, immediately after my system restoration, my laptop was working as good as new again until I installed all the .NET Framework updates. The 100% disk usage reoccurred. In search for a solution in Microsoft Forum, I ran into a suggestion about letting it idle for several hours. It works for me!
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