Proceed at own risk!
  1. Click on the Start Button
  2. Select Run
  3. Type in "regedit" and hit OK
  4. Expand the left hand side to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SafeBoot
  5. Under SafeBoot, you should now see Minimal and Network. Click on them and hit F2 to rename them to "Minimal-" and "Network-", respectively.

This should cause Windows to crash the next time it is booted into Safe Mode