All the time we've had this card there has been a problem with it: when using the tv tuner, it occassionally starts to make a buzzing sound. Sometimes the sound goes away by itself, sometimes you have to change channel on the telly to make it go away. Some tv channels never buzz, and some channels buzz quite often. I have tried reinstalling, updated drivers and I have tried a different sound card, none of which has made any difference. I can't try it on another board as this is our only AGP. Has anyone here got any ideas what's causing it and/or how to fix? System is ASRock K7VM2 (VIA chipset), 1 GHz AMD Duron, 512 MB mem, ATI AIW 9800 SE R350, C-Media CMI8738 5.1, running Win2K.