Some things to try:
1. "Load optimised defaults" in the BIOS and don't enable any form of overclocking, not even XMP/DOCP for memory, let your memory run at its native/slow speed. Do not change anything from defaults unless absolutely necessary. Try a boot with everything on defaults, before trying the next stuff.
2. Try disabling the UEFI CSM (compatibility support module) if enabled, or enabling it if disabled.
3. Make sure secure boot / TPM is enabled. I don't think it should be necessary to boot the installer, but it is necessary for actually running the installed OS.
4. If you have a working system and a spare USB memory stick (minimum 8GB, ideally USB3), try
Create installation media for Windows.
5. If freshly created media for Windows 11 fails, try creating a Windows 10 USB and see if that works. It will possibly help you figure out if you have a hardware problem or a Windows problem.
6. Run memtest86 on it (it may be built in to your UEFI, depending on your board, or download and create a USB boot stick with it).
7. This sounds like a crash and system reset, maybe. If you're getting nowhere, try reseating everything, inspecting all of the edge connectors, sockets, pins, etc for any damage or contamination.
