#1: Use a Windows startup disk

#2: Use Last Known Good Configuration

#3: Use System Restore

#4: Use Recovery Console

#5: Fix a corrupt Boot.ini

#6: Fix a corrupt partition boot sector

#7: Fix a corrupt master boot record

#8: Disable automatic restart

#9: Restore from a backup

#10: Perform an in-place upgrade

Via: 10 Things from Tech Republic