I recently bough an MSI Gx620 laptop that was preloaded with Vista Home Premium 32bit and since it came with 4 gigs of ram I wanted to load 64 bit ultimate onto it. The problem that I've encountered is after the installation faze. When Windows should be loading, it has the bar with the things going across it, but in this case, it just continues forever. It won't progress further than this screen. When I power down manually and power up again, it brings up windows error recovery saying windows failed to start. I can't get into any safe mode options. When I insert the vista disc, I don't get the option to repair, just reinstall which I have done twice. I'm out of ideas, any help?