I was using my computer then Avira AntiVir program detected a Trojan TR/Packed.23766 [trojan]. I told it to deny access then for some reason a few seconds latter my computer restart it self. Once logged back in Vista i lost one of my hard drive (1 terrabyte). I thought it was a bug with windows so i restarted a few more times but the drive still did not show up. I went into the bios and it doesnt seem to detect the drive. My mobo have two SATA controller. I have two 160gb hdd on one controller and the 1tb on the other controller. I tried to swap the 1tb to the other SATA controller and it still did not see the drive. The drive is about 3 months old. I am not sure what happen. Anyone please help. I had all my data stored on the lost drive. Any info will help. Thanks.