Data Execution Prevention (DEP) error

[Ultra]

I run Kings bounty on a HP Laptop with Nvidia 8400M Graphics.
Operating System Vista 32

It was almost unplayable until I disabled the following startup programs and services. All are installed with the Nvidia video driver. I have not noticed any loss in features and slightly better compatibility with Media Player.

RUNDLL32.EXE C:\Windows\system32\NvCpl.dll,NvStartup
RUNDLL32.EXE C:\Windows\system32\NvMcTray.dll,NvTaskbarInit
Nvidia display driver service

I used windows defender to disable the first two and changed the startup of the Nvidia display service from automatic to manual.

The biggest help came from disabling the display service.

The same actions improved a friends computer with a Nvidia 8500GT Graphics card. After these changes he completed the game start to finish without 1 crash.