after 5 minutes of idle, the Thread "ntoskrnl.exe!RtlSidHashLookup+0x1ffc" constantly uses 1 full core of my i7-4700M 2,4Ghz notebook processor.
after moving the mousecurser, the cpu-usage goes back to 0%. its every time after 5 minutes idle, very anoying when leaving the notebook for some minutes because the fan goes up to maximum.
when looking in the task-manager of windows 8.1, just the System process is using the 18% CPU Usage (1 full core / 8), the process uses 0,1MByte permanently and has no HDD-activity, nothing. Just the CPU-Usage stays on maximum, no other processes or HDD-activity can be seen. I would sugest an deadly loop, but dont know where.
does anybody knows a solution for this thing? does anybody know why this routine in the RTL-Library does use the cpu permanently after 5 minutes in idle without any
i tried "sfc /scannow" without any errors, made an antivirus-check with avira antivir + avast antivirus, and some other error searches.
and i temporarily deactivated in the task scheduler in the submenu "task manager" the "maintenance idle task" without any improvements, the same problem persists after 5 minutes of idle with this routine.
Notebook = HP Notebook ENVY 17-j011sg, 2,4Ghz i7-4700M, 12GB RAM, 1TB HDD, Geforce 740M, Windows 8.1 (bought in Dezember 2013)
i am using just Windows 8.1 without any other Programs running, just sometimes Openoffice Writer for writing text, the problem was also persisting since buying and without any programs installed (Windows 8.0) and also after update to Windows 8.1 (windows store), so i would suggest a direktly problem from windows 8.0 and 8.1.
i would be very glad if somebody knows a solution for this annoying CPU-Usage from this routine.
Here a picture from "ProcessExplorer" -> right click on the "System" process -> Properties -> "Threads" -> you can see the CPU-consuming Thread (before taking the picture, its cpu-usage was constantly at 18%).