Why is my PC stuck on the BIOS setup screen?

It might help to double-check all your components. Listing them could give us more clues. Just to confirm, here’s what you've got: CORSAIR Vengeance RGB DDR5 RAM (1x16GB, 5200MHz), the MSI B650M Gaming Plus WiFi motherboard, AMD Ryzen 5 8600G CPU, Cooler Master MWE 650 V3 Bronze PSU, and a Western Digital 1TB Blue NVMe SSD, right? If everything’s set up correctly, you might want to check connections and reseat your RAM or GPU.

Stuck on 'entering setup' is usually a sign of a hardware issue. Make sure your RAM is fully seated and try booting with only one stick if you have multiple. Also, disconnect any non-essential peripherals like additional HDDs or USB devices before trying to access the BIOS again. Sometimes clearing the CMOS can help too.