How to reboot computer softly

How to reboot computer softly to keep hard drive from broken. If your computer error or loading several application and fail but still loading and you can't do everything on your computer, so you should restart computer or reboot. PC computer have a button on front of casing to reboot computer with push this button a time and computer will reboot immediately. But if you do this method in many times causing hard drive will broken or working but with slow speed. SO, to fix this problem is with press and hold Ctrl and Alt button, and then press Delete button twice or more. This method will reboot computer softly.