I turned on my computer today and instead of starting up it told me something similar to "there is a missing or corrupt file and windows could not start" and then it told me I had to put in my vista disk and try to repair the problem. I put in the disk, but couldnt get the computer to run the disk from the startup menus. I then went got frustrated and clicked on "recovery partition", where it told me I could re-download vista. I hoped at some point I would be able to repair my existing vista instead of installing a new one, but instead this new vista seemed to completely override my old vista, and then it told me all my old files were put into a "windows.old" file. Then after logging in it told me I had to re-buy vista, which i didn't do. When I logged in using the limited version of vista all of my files were gone and it seemed like all of my existing settings were erased. I was even disconnected from the internet. I'm wondering if there is some way I can repair and recover my old OS and get rid of this trial version.