Performance Counters for Windows Driver by Microsoft Corporation.
This service also exists in Windows 10, 11 and 8.
Windows 7 edition | without SP | SP1 |
---|---|---|
Starter | Boot | Boot |
Home Basic | Boot | Boot |
Home Premium | Boot | Boot |
Professional | Boot | Boot |
Ultimate | Boot | Boot |
Enterprise | Boot | Boot |
Display name: | Performance Counters for Windows Driver |
Service name: | pcw |
Type: | kernel |
Path: | %WinDir%\System32\drivers\pcw.sys |
Error control: | normal |
Group: | Base |
The Performance Counters for Windows Driver service is a kernel driver. If the Performance Counters for Windows Driver fails to load or initialize, the error is recorded into the Event Log. Windows 7 startup should proceed, but a message box is displayed informing you that the pcw service has failed to start.
1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.
2. Save the RestorePerformanceCountersforWindowsDriverWindows7.bat file to any folder on your hard drive.
3. Right-click the downloaded batch file and select Run as administrator.
4. Restart the computer to save changes.
Note. Make sure that the pcw.sys
file exists in the %WinDir%\System32\drivers
folder. If this file is missing you can try to restore it from your Windows 7 installation media.