the Shutdown, Restart, Sleep button from the menu won't work any longer, most of the time.
That's likely a bug in Windows 10 caused by a recent patch. I've seen that problem on only one machine and that machine never had Process Hacker installed, the issue should have been fixed with KB3197954.
After I uninstall PH and reboot, it works again.
I've never had that issue on my 3 machines running Windows 10?
Next I ran Verifier on Kprocessor.sys and this is what I got
The KPH driver includes a 'self-defense security mechanism' that blocks 3rd party software (including Driver Verifier) from being able to communicate with our driver, that causes Driver Verifier to show "violations" that otherwise don't exist.
The other issue with driver verifier is that it's designed for 'device' drivers and not 'software' drivers like KPH and will show a number of false positives. If you wanted to test KPH with driver verifier then you will need to build the driver yourself. We have tested KPH and never found any actual 'violations'.