i own 2 pc's with abit kt7a raid - latest bios i bought a MX4000 for 1 of those the 1st time i tried i received the long/short/short bios beep codes, i reinserted the card again and it worked fine. the next day ..... my pc gave me nothing else but the same beep codes. i tried the card on my other kt7a pc, same problem... the card works fine (!) on 2 of my older pentium3 systems (1 packard bell and 1 abit pc with BE-6 mobo). I was thinking of a mobo problem but the card worked fine for 1 day on 1 pc...? clearing cmos doesnt help.... ps: i m not sure but a bought recently for the other kt7a a ati 9800, is being returned since it seemed to be DOA (only checked this on my two kt7a systems) one system has a 300W psu so i rule that out too.