Table 1: Device Driver DWORD Values
| Value | Name | Meaning |
| 0 | SERVICE_BOOT_START | Device driver only; started by the system loader |
| 1 | SERVICE_SYSTEM_START | Device driver only; started during system initialization |
| 2 | SERVICE_AUTO_START | Started automatically during system startup |
| 3 | SERVICE_DEMAND_START | Started by the SCM when needed |
| 4 | SERVICE_DISABLED | Cannot be started |