Here's a repair/recovery disc, you'll need access to another computer. Also, it's a torrent download, but it's legal. In fact, it's the one that I use when I need it.
http://neosmart.net/blog/2009/window...m-repair-discs
That's the best that I can do. Make sure that you get the 64 bit version.
An alternative would be if you know someone else that has a Win 7 64 bit computer, use the Backup & Restore function to make a repair disc.
Best of Luck,
Cat