dont know my motherboard, but i have 2 hard drives, my c:// and z:// i named the second one z:// myself, there has been no tampering and no messing of anything, all updates are done, i have all upto date drivers i have windows xp service pack 2 i think, and b4 this all happened i was at work, then i came home put battlefield 2 on then it starts frezzing on some servers so i reset it about 3 times, then BANG the hard drive has disappeard. windows knows its there and says its working properly and so does the bios, but under disk managemt it says it un allocated, my other hard drive is in blue and this one is in black and says unallocated. thats all i can really find out