New cpu broke me pc?

So long story short, I switched my cpu from ryzen 5 2600x to ryzen 7 5800x on a tomahawk b450 max motherboard. Originally it would boot up but then have the cpu light on and wouldn’t actually load anything up to my screens. Just the fans were spinning and light was on. We then tried to do a bios update via a memory stick and it flashed several times, then the pc rebooted itself and it then was stuck. As if it didn’t fully update. Now it only flashes 3 times and half boots up when I press the bios button even with an older version of the bios on it. And it doesn’t even work with my old cpu anymore. If I press the bios button, it’ll “boot up” the pc by turning the fans and lights on and the cpu light on but that’s it’s