why people reformat their hard drives and reload their operating system. No right or wrong answers to this question.some people offered advice on when or when not to do it, and others said it's a lazy way out of troubleshooting or a last-ditch effort. The bottom line is that it all depends on you and your particular computer problem and the state of your system. Some folks do it more often than others, some do it because of serious system issues, and some do it because it's just part of their PC maintenance routine.

you shouldn't have to reformat your hard drive if your system is running just fine. Some valid reasons why you should do an overhaul: when you have serious issues like a virus or spyware infection that you can't get rid of; corrupt files in the system; system Registry issues; or when the system has become so sluggish that nothing in your maintenance ability can cure it.