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P4i65G bios does not currently support ATI HD4xxx series videocards. I think that this is because ATI HD4xxx videocards have two devices on one bus(Audio, video), and AGP was never intended to support that. I saw a thread (can't remember where) witch made something to the IRQ table, so AGP supported multiple devices on one bus

BIOS file ftp://europe.asrock.com/bios/478/P4i65G(1.40).zip

Is it possible??

I am not afraid to brick this MB, because i have two of these