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For a unknow reason my Vista partition was hidden. I have correct the problem and Vista boot

Hy every body, I have installed Vista RTM on my T60p laptop. Before I had an Windows XP, so I move the XP partition on the middle of the hardrive and create a new on the start for Vista. During installation Vista has wrote some boot on the XP partition (D:\). I have delete with Partition magic my second partition because I dont use anymore Windows XP and Vista doesn't want more. Just before partiion deleting, i habe copy the Boot files and the boot directory from partition D:\ to C:\ but Vista don't boot. I have tryed to repair my OS with the Vista DVD without success. During the initialiation Vista doesn't find my harddrive . I have try some drivers but don't work. I have try to make so modification in the Bootmgr with bcdedit but without success too. I cannot open the system root store. I can see all my NTFS partition with the command line so I have problem to undestand the problem ! MBR problme ? Thanks in advance