QlikSense Scheduler Task keeps resetting and cannot run tasks

You need to rebuild the Performance Counters as they maybe corrupt.

Got to cmd

Rebuilding the counters:
     cd c:\windows\system32
     lodctr /R
     cd c:\windows\sysWOW64
     lodctr /R

Resyncing the counters with Windows Management Instrumentation (WMI):
     WINMGMT.EXE /RESYNCPERF