Try this:

Open Task Manager and park it in a corner of your monitor. Select the
Processes tab and display the process in decreasing order of CPU usage.
When you experience the problem, look over to Task Manager and notice
with processes are occupying most of the CPU.

My guess is that there are CPU-intensive applications running in the
background - either intentionally or because your computer is infected.

---
Leonard Grey
Errare humanum est

cuppajava wrote:
> When I playback either audio or video using any medium, WMP,Realplayer,
> Quicktime, the audio and video are degraded. Its like the file is slowly
> grinding down and speeding up. At points, it sounds normal yet slower than it
> should. Even the startup jingle for Windows sounds gravelly.
> Please help.
>
> Thank You