You should now see the Advanced Boot Options screen as shown above.
If your computer automatically restarted or you see a different screen, you may have missed the brief window of opportunity to press F8 in the previous step and Windows Vista is probably now continuing (or attempting) to boot normally.
If this is the case, just restart your computer and try pressing F8 again.
Using the arrow keys on your keyboard, highlight Disable automatic restart on system failure and press the Enter key.
