Windows 10: CPU Usage at solid 100% and brightness issue

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  1.    01 Apr 2016 #1

    CPU Usage at solid 100% and brightness issue


    About a couple months ago I did an in place upgrade to fix a couple of issues I had with Windows 10 and ever since then my CPU usage was always at 100% and when I click the batter tray icon the brightness button no longer says 100%, instead it just says 0% and it's grayed out and I can't click on it. My battery is draining a little fast not because it's defective but because of whatever is using my CPU, even when I turn on battery saver mode it doesn't help. And I tried booting into safe mode to see if the CPU usage would still be at 100% and it only goes down to 99%. I did another in place upgrade afterwards and it still didn't fix it.


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      My ComputerSystem Spec


  2. Posts : 11,234
    W10Prox64
       01 Apr 2016 #2

    Hi.
    Did the system come with W10 or was it upgraded from W7/W8?
    Just a few suggestions here:
    - uninstall Kaspersky and use Defender for now.
    - uninstall any unnecessary Dell bloatware
    - turn off fast startup
    - run Malwarebytes Antimalware Free to make sure it's virus free
    - open Task Manager, go to the Details tab, right click on the column headings and choose Select Columns: check I/O reads, I/O writes and I/O other. Sort by each column and have a look at what's listed as highest. Google the name to identify.
    - use Process Explorer to further identify the problem(s)
    - perform a clean boot, and see if the issue resolves. If so, add things back in 2 or 3 at a time, to identify the culprit.


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    Hope that helps.
      My ComputerSystem Spec

  3.    01 Apr 2016 #3

    I'v ran many scans with Kaspersky and malwarebytes and Spybot and even Windows Defender and I'm pretty sure it's not virus related. Also I did forget to mention in the setting app, can't remember where in the settings because I don't have my laptop with me right now and I'm using my iPhone but in the settings app where you could change the brightness from there, there is no brightness slider to change the brighness. I haven't tried clean boot yet but I will. I'm thinking it might possibly be an issue with Windows. But I'll try clean boot and proccess explorer.

    Also the laptop came preinstalled with Windows 8.1 and I upgraded to Windows 10. Had the computer for a year now.
      My ComputerSystem Spec

  4.    02 Apr 2016 #4

    Please post screenshots of your task manager, organised by highest CPU use topmost, and highest disk use topmost.

    At present we have no idea what is using your CPU time... thanks!
      My ComputerSystem Spec


  5. Posts : 1,586
    Windows 10 x86 14383 Insider Pro and Core 10240
       02 Apr 2016 #5

    Also run Msinfo32, Hardware Resources, Conflicts and Sharing, and Device Manager and post the screenshot of each - looking for hardware warnings and IRQ conflicts due to driver problems
      My ComputerSystem Spec

  6.    02 Apr 2016 #6

    simrick said: View Post
    Hi.
    Did the system come with W10 or was it upgraded from W7/W8?
    Just a few suggestions here:
    - uninstall Kaspersky and use Defender for now.
    - uninstall any unnecessary Dell bloatware
    - turn off fast startup
    - run Malwarebytes Antimalware Free to make sure it's virus free
    - open Task Manager, go to the Details tab, right click on the column headings and choose Select Columns: check I/O reads, I/O writes and I/O other. Sort by each column and have a look at what's listed as highest. Google the name to identify.
    - use Process Explorer to further identify the problem(s)
    - perform a clean boot, and see if the issue resolves. If so, add things back in 2 or 3 at a time, to identify the culprit.


    Click image for larger version. 

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    Click image for larger version. 

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ID:	72628

    Hope that helps.
    I did a clean boot but it was still at 100%, and I have not tried turning off fast startup yet and looking at I/O information yet but when I was trying to I just noticed something here, I don't fully understand process explorer so I don't if it's showing about something else here or if it works like task manager but I thought I would post about this anyway just in case but look at what process explorer is telling me here on non clean boot.

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    I will post back once I have the I/O information and tested out fast startup.
      My ComputerSystem Spec


  7. Posts : 11,234
    W10Prox64
       02 Apr 2016 #7

    ZeldaYoshi said: View Post
    I did a clean boot but it was still at 100%, and I have not tried turning off fast startup yet and looking at I/O information yet but when I was trying to I just noticed something here, I don't fully understand process explorer so I don't if it's showing about something else here or if it works like task manager but I thought I would post about this anyway just in case but look at what process explorer is telling me here on non clean boot.

    Click image for larger version. 

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    I will post back once I have the I/O information and tested out fast startup.
    Interesting. Okay. Curious to see what you find.
      My ComputerSystem Spec

  8.    02 Apr 2016 #8

    Odd set of symptoms so far.

    Product Support | Dell US


    lists your drivers etc for W10 x64. There's a BIOS update dated July 2015.
      My ComputerSystem Spec


  9. Posts : 11,234
    W10Prox64
       02 Apr 2016 #9

    I had similar problems with OEM bloatware. Is that all uninstalled now?
      My ComputerSystem Spec

  10.    02 Apr 2016 #10

    simrick said: View Post
    I had similar problems with OEM bloatware. Is that all uninstalled now?
    Yep. Still didn't work. I even did a BIOS update like dalchina said and still didn't fix it. I tried taking off Kaspersky but that didn't fix it either. I reinstalled it though I because I don't like Windows Defender.
      My ComputerSystem Spec


 
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