My CPU is always running at 100% in TaskManager

We are volunteers willing to help you try to resolve this issue.

The CPU maxing out can be caused by a lot of different issues which include startup programs, antivirus, malware, drivers, and many others. It can even be hardware or heat.

Try these :

If using an SSD or hybrid hard drive be sure it has the latest firmware.

Try the Clean Boot method to see if a startup program is involved - if so it is a process of elimination : (especially use Process Explorer and ProcMon)

Right Click the start button - Command Prompt (Admin) OR Windows PowerShell (Admin) - at the prompt type in

MSCONFIG

and hit enter

How to perform a clean boot in Windows

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

Other programs to help :

Autoruns - Free - See what programs are configured to startup automatically when your system boots and you login. Autoruns also shows you the full list of Registry and file locations where applications can configure auto-start settings.

http://technet.microsoft.com/en-us/sysinternals...

Process Explorer - Free - Find out what files, registry keys and other objects processes have open, which DLLs they have loaded, and more. This uniquely powerful utility will even show you who owns each process.

http://technet.microsoft.com/en-us/sysinternals...

Process Monitor - Free - an advanced monitoring tool for Windows that shows real-time file system, Registry and process/thread activity.

https://docs.microsoft.com/en-us/sysinternals/d...

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Do all of these :

If you had a 3rd party antivirus on the OS you upgraded OR if you have one now uninstall it and then run its maker's removal tool. Use Windows Defender which in Windows 8/8.1/10 is a full antivirus. Despite all the hype out there Windows Defender and the Windows Firewall are true superstars.

List of anti-malware program cleanup/uninstall tools

http://answers.microsoft.com/en-us/protect/wiki...

Uninstallers (removal tools) for common antivirus software

http://kb.eset.com/esetkb/index?page=content&am...

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Check this :

Right Click Start button - Control Panel - Troubleshooting - on right side click View all - System Maintenance.

Tips to improve PC performance in Windows 10 <-- read this link

https://support.microsoft.com/en-us/help/400201...

The below is additional help with some of the methods in the "Tips to improve...." link.

Windows Key + X - Command Prompt (Admin) OR Windows PowerShell (Admin)

(Run these one line at a time.)

SFC /scannow

Note if that shows uncorrected errors - do the below regardless.

When that completes run these :

DISM /online /cleanup-image /scanhealth

DISM /online /cleanup-image /restorehealth

Note if that shows any uncorrected errors - do the below regardless.

Then restart the computer.

Be sure you are running the latest available BIOS and drivers.

Check with System Maker (Motherboard Maker for custom systems) for updates to the BIOS, low level chipset drivers, and the major on-board and separate device drivers. Run DriverView - set VIEW to Hide Microsoft drivers - update those without Dump in their name.

DriverView - Free - utility displays the list of all device drivers currently loaded on your system. For each driver in the list, additional useful information is displayed: load address of the driver, description, version, product name, company that created the driver, and more.

http://www.nirsoft.net/utils/driverview.html

For Drivers check System Maker as fallbacks and Device Maker's which are the most current. Control Panel - Device Manager - Display Adapter - write down the make and complete model of your video adapter - double click - Driver's tab - write down the version info. Now click UPdate Driver (this may not do anything as MS is far behind certifying drivers) - then Right Click - Uninstall - REBOOT this will refresh the driver stack.

Repeat that for Network - Network Card (NIC), Wifi, Sound, Mouse and Keyboard if 3rd party with their own software and drivers and any other major device drivers you have.

Now go to System Maker's site (Dell, HP, Toshiba as examples) (as rollback) and then Device Maker's site (Realtek, Intel, Nvidia, ATI as examples) and get their latest versions. (Look for BIOS, Chipset, and software updates at System Maker's site while there.)

Download - SAVE - go to where you put them - Right Click - RUN AD ADMIN - REBOOT after each installation.

Always check in Device Manager - Drivers tab to be sure the version you are installing actually shows up. This is because some drivers rollback before the latest is installed (sound drivers particularly do this) so install a driver - reboot - check to be sure it is installed and repeat as needed.

Repeat at Device Makers - BTW at Device Makers DO NOT RUN THEIR SCANNER - check manually by model.

Manually look at manufacturer's sites for drivers - and Device Maker's sites.

http://pcsupport.about.com/od/driverssupport/ht...

Please let us know the results and if you need further assistance.

The problem is fixed. I did a few things as I said and they might've helped, who knows. Thanks dude!

Uh well, I did a few things of that essay (which I'm so happy for, don't get me wrong) and I don't know If it was from that but on the next day, my CPU was around 1%-40% and I was really happy about it. The next day though, my CPU was at 100% again and I didn't know what to think. I told my self to give up and today I have got 1%-50% again.. Not going to 100% at all.. Tell me what to think :D

Use Task Manager - Processes tab - click the head of the CPU column which brings those processes using the most CPU to the top. Note which processes are using the CPU. The Arrow on the left of the process name if there will show more parts.

(Later you can click Name on the top left column to return to the usual view.