Help! My PC is Stuck in a BIOS Loop After Overheating

Hey everyone! I ran into some trouble with my PC and could really use your expertise. While I was updating shaders for a game, my PC overheated because I mistakenly left the case closed. Shortly after that, I got a blue screen, followed by the bootup screen and BIOS, but there were vertical color lines on the display. After letting it cool down and turning it back on, I had to use a different HDMI slot to get a signal, although all slots are working fine now. However, my PC is currently stuck in a BIOS loop and I can't get it to boot up! Here's what I've tried so far: reseating all components, cleaning and reapplying thermal paste, updating the BIOS, and changing various boot settings between UEFI, CSM, and Legacy. My setup includes an AMD Ryzen 5 5600x, Radeon RX 6750 XT, and the PRIME B350-PLUS motherboard. Current temperatures are 48C for the CPU and 34C for the motherboard. Since I'm new to building and maintaining PCs, I'd appreciate any straightforward advice you can offer. Thanks!