What make model of cpu, motherboard and graphics card. Are ram sticks matching make model, replacing or adding to old kit (make model).
I have an amd ryzen7 5700x with a 3060 msi b550 gaming plus
But before my brother accidentally put me to bios My PC was working and running tabs
Unplug it and remove the CMOS battery. Leave it unplugged for a minute. Then put the battery back and plug it in. This should reset the BIOS/UEFI to defaults.
OMG thank you so much it worked I probably would have never Know that
Keep that hint from rawintellect with you at all times, its helpful for a lot of things.
And maybe accept His answer as the solution