A 3600x only needs the 8pin, these are used to power VRM's and possibly pcie?(conflicting info on pcie)
If you were using the 3900x or 3950x then I would recommend both (although technically speaking you only need both for serious overclocking). I strongly doubt this is the source of the issue. The reasons I would want to hook both is becuase some boards refuse to boot without it with higher cpu's (3900x, 3950x) and secondly this is not monitored for heat, where VRM's are.
What is recorded fault at the time BSOD ?
What BIOS are you using ?
Have you installed the latest AMD chipset drivers ?
https://www.amd.com/en/support/chipsets/amd-socket-am4/x570You also most likely need to check your windows 10 install using this.
run as admin [powershell] (type into search bar, when you see it pop up, right click on it and run as admin)
sfc /scannow
wait till complete
now run (still in powershell)
Dism /Online /Cleanup-Image /RestoreHealth
wait till complete
if either found and fix integrity errors or corruptions, reboot and then repeat both steps again. If you get caught in loop greater than twice than you have serious windows 10 installation issue. The purpose of the this is to correct any critical errors in current windows 10 install.