How Often Do You Clean Install Operating System On Your PC?

Hey guys!
Clean installing operating system at a regular intervals help to safe guard your data as well as keep your system performance consistent! Its always good to take backups and re-install your operating system, this keeps the registry clean and error free, specially free of error.

So Guys how often you clean install the Operating System on your machine?

I do it once a month! it help me keep my machine maintaini its speed!

Yes, I usually clean my Operating system once in a Year, and because whenever i collect items I used to check it with the Anti-virus system.

I do it once a month! i don't know why i do it! but i had heard it is good for the computer's health...!