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Setting the Start Type Value

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You should set display drivers that are written to the Windows Display Driver Model (WDDM) to start to run on demand on Windows Vista and later, rather than during operating-system initialization, as was the case with display drivers that ran on operating systems prior to Windows Vista. This change is due to manifest and image-based-install functionality that was not present on operating systems prior to Windows Vista. You should set the value for the StartType entry to SERVICE_DEMAND_START (3) rather than SERVICE_SYSTEM_START (1).

The following example shows a service-install section with the value for the StartType entry set to SERVICE_DEMAND_START to indicate that the display miniport driver is started on demand:

;
; Service Installation Section
;

[R200_Service_Inst]
ServiceType    = 1        ; SERVICE_KERNEL_DRIVER
StartType      = 3        ; SERVICE_DEMAND_START
ErrorControl   = 0        ; SERVICE_ERROR_IGNORE
LoadOrderGroup = Video
ServiceBinary  = %12%\r200.sys

For more information about service-install sections that are associated with the AddService directive, see INF AddService Directive.