Windows 10: Explorer.exe always running at 20% CPU Usage. Will not let me restart or shutdown.

Hello


Since about 10 days after updating windows 10 to 2004 update. My explorer.exe is constantly running at 20% CPU usage??


see image? I have ran 3 different malware programs. maywarebytes, Hitman pro, Zemana Antimalware. also running Rkill before this to kill any potential processes, but it found none..




Not sure what to do.. i am fully up to date. all drivers etc... Not sure what all that means, but i am assuming explorer is trying to access something constantly, and wont stop?

I cant keep hard resetting my computer every time I want to shut it down..

:)

 

Shutdown restarts and high CPU

I have two issues please that I would like some advice:

Conditions for error:

When I leave my computer on idle for more than 2 hours plus, the computer

1. Goes into 197% CPU usage
2. When I shutdown, goes into restart and not shut down

What have I done to resolve this?

1. This happens on two accounts
2. Updated firmware to latest bios
3. Run diagnostics; task manager, CPUID, perfmon, all with no issues reported
4. Sent the device back to the supplier for them to run diagnostics
5. Disabled high CPU applications (the biggest being qsynch)
6. Reviewed online rports and changed restrty settings on HK Local
7. Reviwed power management as suggested
8. Run Malwarebytes, Bitdefender, and EDR Comodo
9. Run qualys vulnerability scan
10. Checked windows defender

My setup:

1. Intel NUC I7 10th generation bought from simply NUC
2. 64 gb of RAM
3. 1tb Samsung 970 NVME
4. Windows 10 pro, with all latest updates
5. High speed broadband

I would be grateful for some advice re what to do next to fix this issue.

Regards,

Mike

 

High CPU Usage from Explorer.exe


Alright, so I also found your Solved section before, I tried that then, and now.

I then did a scan with MWB, which picked up a few files but nothing it deemed dangerous. I ran a full scan on my AV instead of a quick scan, and it picked up 3 Severe, which it hadn't before. I removed those and then booted into safe mode.

The High CPU usage was there, but was remedied when I did the solved steps again safe mode. Explorer.exe then remain low CPU usage (<1%) until I rebooted normally. The problem was still there out of safe mode and was not fixed by repeated the steps again.

 

WIN10 1703 update cause Explorer.exe high CPU usage

Hi,



Glad you reached out. First, we would like to know if Explorer.exe
is the only cause of high CPU usage. Because the common cause of high CPU usage are the following:

- Windows 10 Memory leak after the update.

- Driver incompatibilities after the update.

- Multiple startup applications

• 
  

We'll be waiting for your update.