Processor Driver Service Defaults in Windows 8

Processor Device Driver by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:Processor Driver
Service name:Processor
Service type:kernel
Error control:normal
Group:Extended Base
Path:%SystemRoot%\System32\drivers\processr.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Processor

Default Behavior

The Processor Driver service is a kernel device driver. In Windows 8 it will not be started until the user starts it. If Processor Driver fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the Processor service hasn't been started.

Restore Default Startup Configuration for Processor Driver

1. Run the Command Prompt as an administrator.

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

sc config Processor start= demand

3. Close the command window and restart the computer.

The Processor service is using the processr.sys file that is located in the %WinDir%\System32\drivers folder. If the file is corrupted or deleted, you can put it back in there.