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. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_Processor_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. 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.