Windows 10: Do I REALLY need a fresh W10 install after to change mobo and CPU?

A couple months before the end of the year I have moved from W7 to W10 on my old i5-3330 PC. Then it happened that in the week between Christmas and New Year my mobo burned out causing me to stay without computer along all the period. So after the holidays I bought new mobo and took the opportunity to upgrade my CPU to a i5-10400, then I got also new memory sticks and new power supply. All the rest I reused. Well I am just contextualizing.

The fact is that I did NOT reinstall Windows. Instead I just plugged in my SSD (an almost new 240GB Kingston), left Windows detect all the changes and make the adjustments by itself. In the device manager it doesn't show up any conflict or problem but I have noticed that my PC has taking a little more time than I think it should to start applications. As soon I started using the new computer it seemed to load things too much faster than now. Some times it even "refuses" to start them... I click onto the taskbar icon, it momentarily flashes the "wait icon" but nothing happens, then I have to click it again (some times even a third time). It doesn't happen very often but it's usual with FortiClient VPN.

I have heard a couple times that I shouldn't have "recycled" my W10 previous install and that I should in fact to make a full fresh install. I don't know how much this is true or BS. Also I don't know if I really trust on this information because if this was true the computer would be crappy since the beginning instead to degrade the performance overtime so things doesn't SEEM to be related here. But really not sure. I confess that I am not in the mood to make a whole fresh install (lots and lots of apps and tweaks) unless it be absolutely guaranteed that the recycling of my previous install is the root of the issues. Computer is not BAD at all but I kind of smell a rat.

Opinions?

:)

 

Changing my MOBO and CPU a

I'm doing PC upgrades and changes entirely for my new mini-itx build.

I'm not sure about how the process would work, but what are the appropriate steps I need to undertake before making my changes?

• My personal data and files are backed up to my Onedrive, and have nothing to lose in terms of data.
• I have an additional copy of Windows 10 (but would prefer not to use it in-case I do another PC build).
• My MOBO and CPU upgrades are polar opposites of my current hardware:
  • OLD HARDWARE
    • Intel i5 6500
    • AsRock Killer MOBO
  • New Hardware
    
  • • AMD Ryzen 7 2700x
    • Asus Strix X-470

This is my first time doing a particular change so guiding steps would be greatly appreciated! Things like how to wipe my hard-drive and reinstall Windows, etc.

 

Changing my MOBO and CPU a

You will have to buy windows license if you change the motherboard, unless you made the computer originally in the first place, or bought a license key.

 

Windows 10 pro re-activation after the cpu and mobo change

I'm going to be going through something similar, do you have a link to the step-by-step for deactivating the OS and reactivating it on the upgraded device? And all I am changing is the Mobo, CPU and memory, the original boot drive is still going to be
used. Do you recommend a fresh install, or can I still boot from the drive as it is after the upgrade? Windows used to just recognize the change in the system, but not sure how it does this now days. Thanks.