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Hello All:

I'm a new member - let me state right off the bat I am not a techie. I recently upgraded my computer to windows 7 and I've had choppy and stuck audio sounds which spoils my vocals in music recordings. I saw your web page on "How to Diagnose and Fix High DPC Latency Issues with WPA" by niemro https://www.sysnative.com/forums/windows-7-windows-vista-tutorials/5721-how-diagnose-fix-high-dpc-latency-issues-wpa-windows-vista-7-8-a.html

I've noticed the sound on both Firefox and Chrome to be very choppy. In addition sometimes the sound get's caught and I hear a very irritating extended sound of a musical note or voice being played. That lasts a few seconds. I followed the instructions Sysnative provided. The DPC the Latency checker confirmed the problems I'm having. I then downloaded the Microsoft Windows Performance Analyzer from the Windows Assessment and Deployment Kit (ADK) as instructed and followed the installations.

On the next step - click start orb, type in CMD and in command prompt type I get the following results:  C:\Users\user>xperf -on DiagEasy

xperf: error: NT Kernel Logger: Access is denied. (0x5).

C:\Users\user>xperf -d %userprofile%\Desktop\trace.etl

xperf: error: NT Kernel Logger: The instance name passed was not recognized as v

alid by a WMI data provider. (0x1069).

I never proceeded to the last command because it appears the first two failed. 

Can someone help me?

Thanks!

Steve