Windows 10: 100% CPU Usage after upgrading to Windows 10

I had a Windows 7 Professional and then thought about upgrading to Windows 10 since Windows 7 is coming to end. When I upgraded to Windows 10 i got a random Blue Screen. My PC restarted i opened Task Manager and there it is 100% CPU Usage non-stop. Its really annoying i read the same problem of some guy on this kinda forum, and followed his steps. None of them worked and i'm really annoyed by Windows 10. This never happened on Windows 7 and i'm really hoping there is a way to fix this.

My PC:

CPU: Intel Core i5 2400 3,10GHz

RAM:12GB4x3

Graphics Card: Nvidia Geforce GTX 1050 Ti 4GB GDDR5

HDD:1TB


I am waiting for help.

:)

 

cpu usage at 100%

CPU usage at 100% from start up for no apparently good reason. Service Host appears to be the problem but I cant narrow it down more than that at present.

Any suggestions?

I am using Windows 10 full release version 64 bit.

 

100% CPU Usage after Windows 10 upgrade

Hello Aaron,

Thank you for posting on Microsoft Community. We regret the inconvenience caused and will assist you in resolving the issue.

Most of the time, computers only use a small fraction of their CPU power. In fact, many computers use less than 5% of their CPU most of the time. When you open an application, play a video game, or encode media file, the CPU usage will rise or spike temporarily.
Once the CPU intensive process completes, the CPU usage should once again drop down to lower level. Most applications will not use up more than 50% of your CPU for an extended period of time. However, some programs and system processes can use up a large amount
of CPU without you even knowing it. This may happen if a program gets stuck in an infinite loop or encounters an unexpected error.

I suggest you to perform Safe mode and Clean boot procedures on the PC by following the steps below.

Step 1: I suggest you to boot your PC in Safe mode by following the steps from the link below and check if the issue is resolved.

Safe mode is a diagnostic mode that starts your computer with limited drivers necessary to run Windows. The words
Safe Mode appear at the corners of your monitor to identify which Windows mode you are using.

Expand the options to boot into Safe Mode:

http://windows.microsoft.com/en-in/windows-10/start-your-pc-in-safe-mode



Reboot the PC to exit from Safe mode.

To know more about Safe mode, following is an article on
Windows Startup Settings (including safe mode) (Applies to Windows 10 also):

http://windows.microsoft.com/en-us/windows-8/windows-startup-settings-safe-mode

Step 2: If the issue persists, perform Clean boot on your PC by following the steps from the link below and check if the issue is resolved.

Putting your system in Clean Boot state helps in identifying if any third party applications or startup items are causing the issue.

I suggest you to perform clean boot by following the steps from the link below and check if the issue is resolved.

You can open the system configuration window in Windows 10:

a. Using run command.

• • Press Windows Key + R keys on the Keyboard.
  • Type msconfig.msc and press Enter.

b. Using Cortana.

• • Press Windows icon key on the keyboard and type msconfig.
    
  • Select the top most search result.
    

Follow the steps from 3 under How to perform a clean boot
for Windows 8.1 and Windows 8 from the link below (The steps for clean boot suggested in the link below for
Windows 8/8.1 is applicable for Windows 10 as well):

https://support.microsoft.com/en-us/kb/929135

Disclaimer: Start the computer in normal mode refer the section,
How to reset the computer to start normally after clean boot troubleshooting
from the link above.

Write to us with the status of the issue on the same post for further assistance. Your reply is most important for us to ensure we assist you accordingly.

Thank you.

 

100% CPU Usage after Windows 10 upgrade

Hi Community,

I am using ASUS Z87-PLUS motherboard with 8GB RAM and i5-4750 CPU @ 3.2GHz. My PC CPU usage goes up to 100% and keeps there forever. This happens after I upgrade my PC to Windows 10 from Windows 7 a few days back. Initially, Task Manager showed that Norton
Antivirus was the bad guy who used up 50%+ of CPU. I managed to uninstall NAV and updated Windows (via Windows Update) and drivers (downloaded from ASUS). However, the CPU still keeps at 100% usage. Now the Task Manager shows Google Installer (32-bit) and
Dropbox Update (32-bit) use up the CPU resources. I am sure before the upgrade the system was very quite (<5% CPU usage most of the time). Appreciate if the community can suggest a solution here.

Some additional info regarding my PC:

Windows 10 Boot off from: OCZ-VERTEX3 SSD (240GB) - attached to Intel SATA Controller

Storage: Intel RAID 1 Volume with 2x Seagate 2TB HDD (ST32000644NS) - attached to Intel SATA RAID Controller

Standalone HDD: Western Digital WDC WD15EADS-00P8B0 - attached to Asmedia SATA Controller