Windows 10: W10 1903 in VM hanging with System Process using 100% of CPU

So, it's taken me a while to track down exactly what process was causing this. I've attached the first evidence I've found as to what process is causing this problem.


This is a virtual Windows 10 Pro 1903 installation on a Server Datacenter 2016 Hyper-V host. Around 3 months ago (not sure exactly, but certainly not long after we approved the update to 1903) this system began not checking in to WSUS and when I would look into the issue, Hyper-V manager would report the VM was using about 12% of the processor, which translates into 100% in the virtual environment. Requests to remote in would time out, and connecting through Hyper-V Manager would show the lock screen, but it was unable to proceed through logon. The only way to get it to respond is to reset the virtual machine, after which it starts up normally. However, it could freeze again in as little as 15 minutes, or it could take over a day, without any discernible pattern.


This system is used to host the only Java installation we have on campus, which it needs to access HVAC controls for our campus, as well as monitor some of our wireless access points. Other than the browser, and Java, there is no additional software (except for that which I've downloaded for troubleshooting since the beginning of this issue). The system had been working fine for over a year with only regular updates being done. As it's a VM, there's no physical hardware for which drivers could be out of date.


Since the time between system startup and hang appear to be somewhat random, it's not usually possible to notice when it hangs. In the case of the screenshot attached, it froze after I left, but before the problem VM's lock screen came on. I left screen sharing software running in the hopes of catching it in the act and finally succeeded.


Any suggestions for this one? Certainly it's possible to just reinstall from scratch, but if a solution exists, I'd rather find that than just keep nuking and paving the VM every time it decides to try to turn into a space heater.


Best wishes,

Roy

:)

 

System Idle Process CPU Allocation?

Hi,

I am Sumit, an Independent advisor and a Microsoft MVP here to help.

System Idle Process, as the name suggests is a process that indicates CPU is idle and is not being used, aka is at rest. This is done to totalize CPU usage to 100 between the processes.

So you do not have to worry about anything.

 

CPU Usage 100% and idle process is 100%

My CPU usage shows permanently 100% in task manager (in "Processes" tab) even my system idle process (in "Details" tab) is almost 100% and the CPU runs hot - fan is permanently on - CPU speed (in "Performance" tab) is always a bit above maximum speed!!!
McAfee doen't show any virus problem. HP Spectre.

 

CPU usage 100% but system idle process says otherwise


Hello, So I was copying a large group of files (400 gigs) to an external drive, it was about 150 gigs in when the PC crashed ( i believe due to MSI usb speed up), i've since removed the MSI program but CPU usage stays at 100% from the moment the PC turns on, however system idle process shows it's using most everything which is good, and PC perfomance is normal and unlike if CPU usage was actually 100%, but I can't figure out how to fix this, any suggestions or tips would be so helpful, I've attached screen shots showing 100% usage but every program running doesn't add up to near that and system idle showing everything mostly idle. Thanks!!!!!