I have a Packard Bell Istart D2314 on which the Vista operating systen came pre-installed and without any disk or instruction book as it was an ex display. It has worked ok until now. I have allowed automatic download and install of updates usually carried out on shutdown. The mosy recent occasion being three days ago the PC shut down after installing updates. Now it will not boot up no matter what I try. I have tried the F2, F3, F8, F11 options along with all the actions possible within those options to get the Pc to boot into any mode from where I can reach the repair facilities but it always ends up with a dialogue saying "Windows is loading files"(presumably repair files) followed by the Packard water splash screen from where I can go nowhere but back to power off/power on. Can anyone advise me what my options are to bring the Pc back to life? If I ugrade to Win 7 will this install over the existing vista in the state its in and will it do this without deleting all my data?