Windows resource monitor shows only a CPU core when he should have four.

Windows 7 Home Premium 64-bit, SP1
Intel Core i3 2330 m-hyperthreading

Resource monitor normally indicates two nuclei and Hyperthreaded (a total of four graphs) when seen on the tab CPU recently single core (one graph) is displayed. This change is caused by one of the updates of Windows or an indicator of a hardware problem? Is there a recommended KB or a patch that solves it?

original title: change of resource monitor (?)

You asked: "what version of Windows 7 do you have?" ... Home Premium x 64, SP1 as indicated at the beginning of my first post.

As my screen name, incurably curious, says I couldn't let it go. Assistance in the meantime, I searched tirelessly and found a cure. I had to make a change through msconfig. I don't have any idea how the settings have been changed because no one else is using this machine.  [????] (Microsoft Security Essentials and Malwarebytes returns own scans; so I doubt that the cause is associated malware.) The following explains what I've done and the results.

  1. I went into msconfig > startup > advanced options and find the number of processors, set one. The arrow to expand a menu drop-down has also shown that a single processor. Which did not make sense because my processor Intel Core i3 2330 M's two core with hyperthreading.
  2. I unchecked the box and restart the computer.
  3. I returned the number of processors as described in #1 above. Expand the menu gave me the choice of 1, 2, 3 or 4 processors. I chose two and checked the box.
  4. I rebooted the computer again.
  5. I checked the monitor of resources (via the Task Manager) and found multiple graphics, I'm used to the display. The graphics are labeled: Service use of the CPU, CPU 0, 1 parked CPU 2 CPU and CPU3 parked.
  6. Parked CPU1 and CPU3 parked show no activity, which is expected. These show only activity when hyperthreading is active, which is rare with the programs I run. Only programs written specifically to hyperthreading use the feature.
  7. CPU utilization service CPU2 and CPU0 show activity as expected.
  8. Manager tasks shows four graphs still now.

The reason why I know not what to expect is that I have upgraded RAM and completed cooling there are a few months and one of my tools use resource monitor to control the computer. (I used other means to monitor the internal temperature). I managed to run enough programs to use more than 7 GB, the 8 GB available RAM and CPU usage Dungeon in the range of 75 to 100% for more than an hour during trials. Hyperthreading (CPU1 and CPU3) clearly indicated to be active too. Time CPU ran in the range 165F without additional cooling and order of 125-130 with additional cooling.

I will wait for return of the answers with explanations and/or questions until I got this mark as resolved.

Tags: Windows

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