Null Service Defaults in Windows 7

Default Settings

Startup type: System
Display name:Null
Service name:Null
Service type:kernel
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Null

Default Behavior

Null is a kernel device driver. In Windows 7 it is being loaded at Kernel initialization. If Null fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the Null service is not running because of the error.

Restore Default Startup Configuration of Null

1. Run the Command Prompt as an administrator.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config Null start= system
sc start Null

3. Close the command window and restart the computer.