Video skips / stutters after 3-4 minutes of playback

> Hi all,
>
> I'm hoping you can help me with this problem: playback of
> any video type results in stuttered video and audio after
> approximately 2-5 minutes of playback. This occurs
> whether it is a DVD player being played through PowerDVD
> or an .avi or .mpeg file being played through Windows
> Media Player. The stuttering continues until the mouse is
> moved. Then it stops and plays normally for another 2-5
> minutes before stuttering again.
>
> So far I have attempted the following:
>
> 1. Reinstallation of the drivers for the Liteon CD-ROM /
> DVD drive
> 2. Dusting of the Liteon CD-ROM / DVD drive (I originally
> thought it might be a hair or something)
> 3. Reinstallation of the drivers for the Nvidea GeForce4
> MX 440 card
> 4. Numerous virus, trojan and worm scans
> 5. System defrag
> 6. Reinstallation and upgrade of both PowerDVD and
> Windows Media Player
>
> My next step will probably be to move the contents of my
> c: drive over to my e: drive and do a full reinstall of
> Windows XP Professional.
>
> If anyone has any insight into what could be causing this
> problem, please let me know. You can reply to the post
> here or e-mail me at deadgecko@hotmail.com. I'm ready to
> start pulling out my hair, so even the smallest suggestion
> would be much appreciated.
>
> Many thanks,
>
> Ali
>