Windows 10: Weird CPU % utilization post 1903 updates

I am hoping this is a Windows thing and not some super clever trojan CPU miner, It seemed to start after the 1903 updates.

So for no apparent reason or with any relationship to any particular running application my CPU% will creep up to about 60-70% which increases the CPU fan speed and thats what tipped me off. So naturally I open task manager AND poof! CPU% drops! The cpu fan cycles down and there is no app or process I can attribute this to. Its maddening.

I am circumventing the issue for now by leaving task manager running.

Anyone else see this recently?

submitted by /u/NewNormalEh
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:)

 

Weird Noise after Anniversary Update

Hello John,

Let’s check what is causing that weird sound on your laptop.

Based on the link that you had provided, it seems that it’s either your CPU fan or Hard drive which is creating that sound.

If it’s the CPU fan, it might be an issue due to heavy processing, processor heating up or changes made during the update. If it’s your Hard drive, the issue might be with HDD performance. We suggest you to back up all your data to your external drive
to prevent data loss.

Follow these steps to resolve your issue:

Step 1: Check your Task Manager

Close all applications and check in task manager for any high usage of resources by any process.

• Press Ctrl + Shift+ Esc together to open task manager.
• Click on more details and check for any apps that is taking more resources.
• Take note of any Applications that are taking High CPU usages and try to disable it if it’s not that important.

Step 2: Start your computer in Safe Mode

Safe mode will start computer with basic drivers to check what might be causing the issue in normal functioning of computer. Check if the weird sounds are still happening.

Start computer in Safe Mode

Step 3: Run Hardware and Device troubleshooter

• Press Windows + W, and type troubleshooting.
• From the search list, click on troubleshooting.
• On the left pane click on view all to get the list.
• Click on hardware and devices troubleshooter.
• Follow the on screen instructions to complete the troubleshooting.

Hardware and device troubleshooter is an inbuilt troubleshooter that will find the issues with hardware devices and try to fix them automatically.

Let us know what happens.

 

CPU utilization >100%

I recently upgraded from Windows 8.1 to 10, and discovered a weird problem when opening task manager where CPU utilization was always at 100%. I did a clean install of Windows 10 to make sure it wasn't application specific, but still the same problem.

This problem is very strange because utilization doesn't seem to be tied to a specific process- it just always seems to add up to 100%. Resource monitor actually shows CPU Usage to be in the million%, which is definitely wrong. No performance degradation,
CPU temps are very normal, and even third-party programs such as Speedfan and CoreTemp are reporting negligible CPU usage (1%-2% idle).

I have tried disabling all startup applications, doing sfc /scannow, viewing reliability history, and restarting multiple times. No luck

 

Windows update, 1903

• my update 1903 has been stuck at 99% for 4 hours now. It say downloading. Yet nothing is. Has CPU maxed. Please advise