Windows 10: CPU stuck at 0.79/1.79 Ghz with dedicated GPU and boot issue

Discus and support CPU stuck at 0.79/1.79 Ghz with dedicated GPU and boot issue in Windows 10 Drivers and Hardware to solve the problem; Good day, Dell Inspiron 5537, Intel i7-4500U, 12GB RAM, AMD Radeon R9 M200X, Windows 10 build 1803-17134.523 Today, I experienced the most peculiar... Discussion in 'Windows 10 Drivers and Hardware' started by ArtyChas, Jan 11, 2019.

  1. ArtyChas Win User

    CPU stuck at 0.79/1.79 Ghz with dedicated GPU and boot issue


    Good day,


    Dell Inspiron 5537, Intel i7-4500U, 12GB RAM, AMD Radeon R9 M200X, Windows 10 build 1803-17134.523


    Today, I experienced the most peculiar issue that I encountered so far. I was playing a video, using my dedicated GPU (AMD Radeon R9 M200X), and noticed frame drops and, at the same time, the CPU dropped its current (and maximum) speed to 0.79 GHz. No new drivers, programs, or updates have been installed that may have caused the issue, and last updates were installed 3 days ago (KB4480966/KB40979).


    I attempted to fix the problem with a bold move, by restarting the laptop, and... well, it didn't boot. There was no three unsuccessful attempts to boot, it went straight to automatic repair. "Restart", "Continue to Windows 10", "Startup Troubleshooting", and "Startup Settings" were bringing me back to Automatic Repair - Diagnosing your PC - Troubleshooting menu. As I got sick of clean installations, I tried to restore point from last update (3 days ago), it initialized the restore, prepared for restore... then went straight back to Troubleshooting menu. At this point, however, "Continue to Windows 10" would successfully boot it up.


    Figured that my BIOS is rotten, I upgraded it to latest Dell A11 BIOS and enabled Intel SpeedStep in the BIOS menu. However, now, if you boot up using the method above, it will still fail to boot, if restarted. Now, it throttles at 1.79 GHz, and upon testing, only if dedicated GPU is in use. Using AIDA64, I stressed CPU only, GPU only, CPU and GPU. As seen in figures below, first option shows maximum CPU capabilities, second - no stress on CPU yet 1.79 GHz throttle, third one - flat line in Task Manager. For the throttle to be removed, one can wait until GPU is not in use, kill the process that's using it, or disable/enable GPU device.


    CPU stuck at 0.79/1.79 Ghz with dedicated GPU and boot issue [​IMG]CPU stuck at 0.79/1.79 Ghz with dedicated GPU and boot issue [​IMG]CPU stuck at 0.79/1.79 Ghz with dedicated GPU and boot issue [​IMG]


    Few things to get straight:

    1) Advanced Power Settings - maximum processing power at 100% for all;

    2) Battery at High Performance;

    3) Battery Saver is off (it's connected to AC, duh);

    4) Issue persists on both AC and battery;

    5) Connectors are fine, it's a sealed laptop;

    6) IT'S NOT OVERHEATING;

    7) IT'S NOT OVERCLOCKED BY MAGIC TOOLS;

    8) I installed an update (KB4100347), but it still failed to boot up after, so I had to use a workaround (Upd. it actually did install update, which means that it doesn't really restore point, or restore fails half way through. Either way, it helps to boot up). At the moment, I am downloading a feature update to build 1809 [will update shortly];

    9) Lastly, all the drivers are up-to-date, according to both Windows 10 Update and Dell Update, and no changes were made to cause the issue.


    PS. Please don't ask me to Reset PC or Clean Install. I've suffered 4 Windows deaths in last 4 weeks and I'll go nuts if I have to re-install all the software again. However, please do let me know if it will work if I upgrade the build to Insider (don't wanna lose restore point workaround, as it's the only thing that helps to boot it up right now)

    PPS. Please let me know if any tests / Event Viewer captions will help to locate the issue.

    :)
     
    ArtyChas, Jan 11, 2019
    #1
  2. 원민이 Win User

    WINDOWS 10 updates stuck at 79% continually

    My windows 10 updates are stuck at 79%.

    I have gone back to a restore point, the downloading was cleared and now they are stuck at 79% again.

    My present version: 10.0.15063 build: 15063

    Thanks for any help
     
    원민이, Jan 11, 2019
    #2
  3. toro8899 Win User
    Processor i5 4670 3.40ghz works at% 79

    Thank you for responding but we are not understanding, we are talking about two different things. if you demand your processor to the maximum deveria mark performance in the use of% 100 and the speed of ghz that has its processor, in my case to demand
    the maximum does not exceed 79% and the speed of 2.69 ghz is 3.40 ghz no way or opening 24 programs and 36 web pages at the same time.
     
    toro8899, Jan 11, 2019
    #3
  4. DFB40 Win User

    CPU stuck at 0.79/1.79 Ghz with dedicated GPU and boot issue

    CPU not running in full speed in Windows 10

    Thank you for your reply. I had done all of those things prior to my posting. Here are a some things I have discovered while testing:

    The processor is not just slow, it is pegged at .79 GHz - flat line. The base speed for this processor is 2.40 GHz. Upon boot I run the task manager as soon as I can and display the CPU performance. The the CPU performance is at 100% and about 2.79 GHz
    with little variation until the up time shows around 1 - 1 1/2 minutes, at which time the CPU drops precipitously to .79 GHz and never varies, even when I stress it. When I do a clean boot, the CPU behaves the way I would expect it to - varying between lows
    and highs as I do different tasks on the computer, and computer performance is dramatically improved. I am attempting to discover where the problem occurs by selectively enabling services before rebooting.
     
    DFB40, Jan 11, 2019
    #4
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CPU stuck at 0.79/1.79 Ghz with dedicated GPU and boot issue

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