My laptop had XP on it, but a french version. I installed Vista over the top of it, but cant get it to work. It installed correctly, then rebooted. Its now stuck on the black screen with the green bars going back and forth, and it just sits there. So I formatted the drive, went to load vista back on again as a clean copy, but I get the message that the BOOTMGR is missing. How do I correct this to load Vista back on. Hope someone can help.