i have tried everything i could think of, i even tried what some people said. My computer was running fine, i shut it off and it never could reboot on again. It keeps rebooting and rebooting when trying to load xp. When i go to the bios, it shows me the 2 sata hdd (only in raid). SO i gave up and decided to reformatt the hdd. After xp does the initial loading of drivers. It tells me that there are no hdd present. My motherboard has the Sata connection on the board. So i do not need any third-party drivers. What is my problem? Did i miss any thing? Could a virus do this?