Nothing happens if I do that. In some movies I dont have this annoying noise. So it must be something else.

Please help me.

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AMD Tbird 1.33 GHz 266 FSB
ASUS A7M266
Corsair 256 MBs DDR
Creative Geforce 3 Ti 500
Soundblaster Audigy
Maxtor 60Gbs and 40Gbs UDMA 66
Pioneer DVDx16x40
Plextor CDRW 40x4012
2 x Realtek network cards