I have 2 HDD's : 1 SATA and 1 IDE (which is not being recognised by the motherboard). When disconnecting everything except the IDE HDD, the mobo passes the POST test but when looking for HDD's stops for a bit with HDD activity light steady on. After that, it tells about no proper boot device (eventually). Also the HDD activity light flashes in a 1 long 6 short pattern. CPU is some kinda Celeron at stock freq.