Help! My PC Keeps Blue Screening and Booting into BIOS

Just to add on, you've mentioned the BIOS isn't detecting the M.2 drive where Windows is installed. That definitely points towards either a drive failure or a connection issue. Keep an eye on your stress tests for the CPU and RAM. If those are passing smoothly, then we could be looking at a hardware failure specifically with your storage.

It sounds like there are usually two common reasons for your system booting into BIOS: a failure to detect the boot drive or unstable hardware settings. The former could be due to a drive issue or problems with your operating system or motherboard controller. The latter often relates to overclocking of the CPU or RAM. If you're not overclocking, it might be an issue with the XMP profile, RAM, the CPU, or motherboard. Unfortunately, it's a bit of a maze, so if you can, have a local shop run diagnostics on it.

To troubleshoot the BSOD issue, you'll want to collect the dump files which can help diagnose the problem. If you can boot into Windows normally or even access Safe Mode, check for dump files in C:WindowsMinidump. If you find any, zip them up and upload to a file sharing site since some can be tricky. You'll want multiple dumps for a clearer picture, so if you only have one, make sure to configure Windows to create Small Memory Dumps as per this guide. That way, you'll get more useful data to analyze.