Hi,
In addition to the Q&A procedure, try performing a clean boot and check the Task Scheduler to see if there are any active PowerShell tasks.
Search for "Task Scheduler" in the search bar > Task Scheduler Library.
Open the Command Prompt (as administrator) and run the following commands: sfc /scannow and dism /online /cleanup-image /restorehealth. Wait for the process to complete and restart the computer.
Then, perform a clean boot and uninstall any applications you do not use.
Thanks.