Yes I've tested with only one NV6480e card without luck :-\
Also, I've tried several nv6480e cards and this didn't fix the problem.
I haven't any other devices connected...I've also made a fresh installation of WinXP without install any other software..no luck :'(
I'm wondering if there isn't any hardware compatibilty with these chipsets...What model of MB do you generally use ?
Having said that, chipset i945 appear in the list of hardware recommendation provided by Avermedia, so...don't sure this is the problem...
Thanks.
Regards,