Please read carefully till end
1. It shouldn't
2. With the latest bios and 3000 series cpu, yes, after you update the latest bios to the latest and replace the cpu with 3000 series cpu, make sure to load optimized bios, disable csm, enable amd ftpm, then save and exit, then go back to bios, and find secure boot option, enable it, and install the keys (not update it), then apply/ok, and go back to bios to check if the secure boot is now on USER, enabled in standard mode, and the keys is insalled (the option will be only remove/uninstall keys if the keys is installed)
3. The max it could take is 3950x and 3900xt. *while actually the bios could contain 5000 series microcode, amd said no and there is no 4000 and 5000 series support for that chipset, only b450 and x470 that have the permisson XD
4. Update it to 4.60, then the latest, just download 2 bios, extract it and put it in the flash drive so you could install the bios into without going to windows to download it again
Also advice before changing cpu and updating bios:
- Disconnect from internet in windows
- Uninstall all the processors on device manager (should be 16 on yours, also when it asks for restart, click on no) like this:
- Shut down your pc, and update the bios step by step as mentioned in advice no 4
- then after bios update to the latest, shut down your pc immidiately (just go to bios again after the latest bios update and power off your pc), replace the cpu, go to bios again and do advice no 2, and you're good to go to boot to windows
- install the latest AMD Chipset driver, reboot, go to power plan and choose amd ryzen balanced, and you're good to connect pc to internet.