|Better, when you get to your boot options window (F8) you should have options like "Last Known Good Configuration" and "System Restore". While the first should work, the second one almost definitely will work. |
If not, then you if you can get into Safe Mode, do the System Restore from there.
If that does not work, you can also access it through a Windows 7 Repair Disk (you should have mode on when the machine was new).
You have to be a little bit crazy to keep you from going insane.