Replacing motherboard, CPU and ram, I have a few questions

Sep 19, 2018
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As the title says i'm swapping my CPU, motherboard and ram and have a few questions about the switch. I'm going to do a completely fresh install of windows with a new key but i'm not sure if i'm supposed to delete my old version from my ssd before making the switch? If i should delete the old version it'll obviously have to be the last thing I do on this setup and i'm not sure how to do it in general. I'm also confused about what I can and cannot leave on both my ssd and hdd? Can I leave my graphics card driver and games installed on my ssd and hdd or should I delete everything?
 
Sep 19, 2018
33
0
30

what about my other stuff though games, programs, drivers, ect. will my wifi usb just work when plugged into the new motherboard?