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Sorry, we can't help you with passwords. It's in the AUP agreement.
http://www.sysopt.com/aup.html

If you mean a Windows 7 DVD, it doesn't have to be made on that machine.
If you mean a System Repair disc, it just has to be 32 or 64 bit, depending on what is already installed. You didn't say what...

Yes, F8 will bring up the Advanced Boot Options menu (including Safe Mode) for Win7.
It shows you in the link I posted.

Again, the link I posted shows how to get to System Restore.

A "repair install" or "in-place upgrade" requires a working Win7.

Did you already try "Last Known Good Configuration" and Safe Mode?

Did you try a System Restore to a previous point?...