Audioicon

I would never bring over the old stuff on a new PC. And also, some installation may not work seamlessly with a new Motherboard, meaning the install will require a serial number given it see this as a new PC, so make sure you have a serial number.

There are also issues with drivers, what I am mean, the motherboard may require it's own drivers and configuration given it is different from what was there before.

That was true prior to Windows 10.  The new hardware abstraction layer (HAL) in Win 10 allows for a seamless motherboard swap.

abacab

Audioicon

I would never bring over the old stuff on a new PC. And also, some installation may not work seamlessly with a new Motherboard, meaning the install will require a serial number given it see this as a new PC, so make sure you have a serial number.

There are also issues with drivers, what I am mean, the motherboard may require it's own drivers and configuration given it is different from what was there before.

That was true prior to Windows 10.  The new hardware abstraction layer (HAL) in Win 10 allows for a seamless motherboard swap.

Maybe I should clarify, even if you can swap without issues, in my case I do not want to bring over issues or files or maybe possible virus. In this case I want to bring over only essential verified files.

I agree with you, if one just need to swap a motherboard, then it works however if you want to bring over only certain files then it get s bit more tricky.

abacab

husker
I also do "clean" installs.  Windows is so easy to install these days.

True for Windows, but not so much for my 300+ plugins and other software. 
 

 
Fair enough.  I don't have too many plugins that are difficult - the Air suite is manual, as is the Synthmaster stuff, but the other ones I have (Arturia, Waves, UVI, EastWest, Cakewalk) are pretty much automatic and easy.  Those like Abacab with quite a few plugins would obviously spend more time.
 
I used to be one of those guys who would rebuild and OS and reinstall everything ever year - whether it needed it or not.  :)  I just don't have that kind of time anymore, but I do enjoy the process of rebuilding things.

The only clean installs I have done in the past 10 years or so was the upgrade from Win XP to Windows 7, and then from Windows 7 to Windows 10.  The only reason I had to do it for Win 10 was that I was going from 32-bit to 64-bit at that time.  Otherwise, I take regular system images that I can easily restore from.
 
And I always use CCleaner (use the registry cleaner sparingly, and with care) and a few Sysinternals utilities (Autoruns) to de-crapify my PC, and avoid the buildup of things that would make a clean install desirable.  I know of at least one user on these forums that clean installs his computer once or twice a year, whether it needs it or not.  I'm sorry, but that IMHO is a huge waste of time.
 
I always create a system image after doing an initial clean Windows install, and applying all service packs and patches.  Then I archive that image for if/when I ever want to revert to "ground zero".  Happily, I have never had to use that one, but regular current images have saved my bacon a few times!