If upon startup an error message appears:

Rundll

failed to start "C:\Windows\system32\NvCpl.dll,Nostartup"

 

You can disable it by:

 

1.       Stop and then disable the “Nvidia Display Driver Service”.

 

2.       Then delete the registry key NvCplDaemon.

 

You can create a batch file for disable :

sc stop nvsvc

sc config  nvsvc start= disabled

reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v NvCplDaemon /f

 

The error message NvCpll.dll,NvStartup may appear when using Nvidia video cards and logging on with non administrative users.

The error refers to the Nvidia System Tray icon used to change display settings, change the clock rate and memory speed for nVidia based graphics cards.