Computer won't boot after CPU upgrade
I'm at a loss. I recently purchased a new CPU during black Friday. After swapping it in, the computer won't boot. The fans spin up for several seconds, then it just restarts. The CPU and DRAM red lights are solid while it's on. I don't have a speaker, so no beeps. When swapping the old CPU back in, it works fine. BIOS is up to date, motherboard supports the CPU, and I've tried resetting the CMOS. All I did when swapping back and forth was remove GPU and swap CPU.
Motherboard is an Asrock X570 Phantom Gaming 4 (BIOS 4.3), old CPU is a 2700X, and the new CPU is a 5700X. PSU is evga, I think 600 watt. GPU is 5700XT.
Is there anything I'm missing?