Some people reformatt or reinstall their OS all the time. I see them saying just formatted so.... My computer is running well. And I haven't reformatted or reinstalled in over 18 months. Here's how I managed.
Ever since I got a spare HDD, I Ghost it every 2 to 5 wks. A couple times I was so tired or tweaked on coffee, I shouldn't have been fn with my computer. Ghost literally saved me weeks of time. It takes 30 minutes to Ghost my HDD vs weeks if I f it up. In fact when I got rid of NIS (replaced with Sygate PF Pro 5.1) & NSW (now NOD32 as resident & KAV Pro 4.5 as non-resident) the only 2 Norton products I kept were Ghost & Utilities.
Are you a masochist or is it just for fun?