Windows 10: ONLY showing using 1 core out of 4 core processor

  1.    07 Feb 2017 #1

    ONLY showing using 1 core out of 4 core processor

    I don't know a lot about computer hardware or software problems. I run a Dell Inspiron 20 All In One PC. Model 3045. It is a 4 core computer. In the bios and Device Mgr. only shows operating on one core. There is only one item entry. AMD A4-5000 APU with Radeon TM) HD Graphics.

    A couple weeks ago PC acting weird - first, very slow. Odd messages: such as (not exact error message) Shutting down because of problem will restart. Adapter/Charger check. Bought new dell adapter and no difference

    Had my local computer guy check and he is the who told me about only operating on one out of four cores per the bios and device mgr. Called Dell and they ran a diagnostic and advised hardware no problem. Wouldn't address issue of why then does it show only one core operating. Next I called MS and they ran diagnostic and confirmed software ok. They cleaned it up and ran somewhat faster, but not like a new machine.

    Any direction you can offer would be appreciated. Dell is 2 1/2 years old.
      My ComputerSystem Spec

  2.    07 Feb 2017 #2

    Hi barbslife and welcome to Ten forums.

    This CPUs aren't really fast, but should be OK for browsing and so..
    I've searched a bit, and found one similar problem, but no solution to it.

    Click on Start and type "msconfig" then click on program as it appears. Click on boot tab, then advanced and check if there are processors limited...

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      My ComputerSystem Spec

  3.    07 Feb 2017 #3

    Open up task manager, select performance tab, select cpu.......then look at the bottom right of window. There you will find the info on your cpu......sockets, cores, logical processors and your cache. This is mine....a single processor with 4 cores that has hyper-threading which gives me 8 logical processors.

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  4. Posts : 7,914
    Windows 10 Professional
       07 Feb 2017 #4

    In Control Panel/Power Options, if you have settings at 'Balanced' or 'Power Saver', many cores will remain 'Parked' until needed, especially in Power Saver mode on Battery.
    Experiment with the power options and monitor the cores in Resource Monitor/CPU Tab.
    (In High Performance Mode, no cores 'park' themselves)

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      My ComputersSystem Spec

  5.    08 Feb 2017 #5

    On the Task Manager view as in post #3
    Right click on Graph and select > Change graph to > Logical processors.

    One core won't be your problem. More likely are Malware, lack of application/software maintenance, poor basic specs.
      My ComputerSystem Spec

  6.    08 Feb 2017 #6

    Looks like you all missed in the first post from OP:

    In the bios and Device Mgr. only shows operating on one core. There is only one item entry. AMD A4-5000 APU with Radeon TM) HD Graphics.
    It means that only one core is recognized. Could be overheating and hardware failure or possibly option in BIOS.
      My ComputerSystem Spec


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