Windows 10: Help ! System Interrupts are running are crippling CPU

All installed OK but unusable due to System Interrupts hogging the CPU. I don't know what these are but I'm unable to stop the process in task manager, the end process box is greyed out for this.

:)

 

Disk usage spike to 23%

Windows 10, Lenovo B50-30

System interrupts using a lot of cpu. (I've emailed a link of the Windows performance toolkit diagnostics.)

Original Title: System interrupts 18-23% CPU usage

 

service host local system with and without (Network Restricted)

You have probably seen Service Host Local System using some CPU cycles in your Task Manager. You may also see others: Task Manager, System, System Interrupts, maybe a Malware checker, etc. These are programs that either need to run at various times
or are running because you have opened them up. No need to worry about them running as some will show particularly high CPU/Memory usage at certain times and low usage at other times. If you need to run a CPU intensive program or game, you may want to
consider a program that will shut down unneeded programs for you and this will save you some CPU power.

 

Did you install any third party drivers? If so, i'd uninstall them

 

Hi Mystere, your spot on... I didn't, but MS did. The culprit is the Atheros WiFi driver. I've found a Vista one that works and that has brought the CPU and interrupts right down.