Core 0 in Task Manager is constantly at a 100% usage.

[XTrior]

Whenever I start my PC, I've noticed that in the task manager, my Core 0 is always at a 100% usage. My PC could be idle and nothing would be open but still the usage would remain at a 100%. I have 8 cores in total and besides from core 0 all other work normally. Also, if I restart my PC on the spot, the Core 0 goes back to normal but if I shut down my PC and then start it again after a few hours then Core 0 goes back to being used at a 100%. Just to mention once again I have nothing open that would use that much power from Core 0.

[Fanordi]

Hello, please disable the fast boot and tell me if you have the same problem:

https://www.tenforums.com/tutorials/4189-turn-off-fast-startup-windows-10-a.html

After this you can know if the problem cames from Windows or not.

[XTrior]

I dont have the fast boot option available.

[Fanordi]

It is not normal at Windows 10.. So I recommend to you download HP Support Assistant here and update all your drivers (except the BIOS): 

https://ftp.hp.com/pub/softpaq/sp95001-95500/sp95226.exe

If you have always the same problem you will verify Windows files. For this you can enter "cmd" in your Windows search bar, and right clic in "command prompt" for execute in administrator. Enter this command and tell me result:
sfc /scannow

[XTrior]

It says, "Windows Resource Protection did not find any integrity violation". Also another thing I found out is, in task manager there are 3 tasks that are consuming the most CPU usage, System Idle Process, System and System interrupts. I cant open the file location of System idle process and system interrupts but when I open the file location of System, the process thats hightlighted is something called "ntoskrnl.exe". I assume this is the culprit. What is this and what do I do about it.

[Fanordi]

Do you have made the driver updates?? 

[XTrior]

I checked and all my drivers are already up to date.

[Fanordi]

What is your Windows version?? You can find it taping winver on the search bar. 

[XTrior]

Its version 1909. My Laptop came with this version so I cant downgrade to a lower version. 

[Fanordi]

When do you have bought this laptop?? 

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@XTrior wrote:

Also another thing I found out is, in task manager there are 3 tasks that are consuming the most CPU usage, System Idle Process, System and System interrupts. I cant open the file location of System idle process and system interrupts but when I open the file location of System, the process thats hightlighted is something called "ntoskrnl.exe". I assume this is the culprit. What is this and what do I do about it.

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It is appears to a big problem with Windows.. If it is a new computer the best option is maybe try to reinstall Windows..