Performance Counters for Windows Driver (pcw) Service Defaults in Windows 8

Performance Counters for Windows Driver by Microsoft Corporation.

Default Settings

Startup type:Boot
Display name:Performance Counters for Windows Driver
Service name:pcw
Service type:kernel
Error control:normal
Group:Base
Path:%SystemRoot%\System32\drivers\pcw.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\pcw

Default Behavior

The Performance Counters for Windows Driver service is a kernel device driver. In Windows 8 it is being loaded by Boot Loader before Kernel initialization. If Performance Counters for Windows 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 pcw service hasn't been started.

Restore Default Startup Configuration for Performance Counters for Windows Driver

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

2. Save the Win8_pcw_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The pcw service is using the pcw.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.