Frequent PC crashes are back after being solved by a bios update last year
About a year ago I was having very frequent crashes on my custom built pc. A friend suggested a bios update as my CPU (13900k) shipped with issues that intel acknowledged and fixed. The bios update immediately solved the issue and I had no more problems until about a week ago. I unplugged a peripheral and immediately my pc crashed in the exact same way it used to, since then my computer crashes several times a day and after a crash will often crash another 3 times right after booting before I can finally get a stable boot. When my pc works it is perfect, no performance issues or stuttering until it abruptly crashes.
There are two distinct ways in which my pc will crash.
My monitors will suddenly go black and the fans will spin up to 100%. Audio will continue playing and applications seem to work normally, after about a minute the pc will abruptly shut down. This doesn't seem to be related to any particular application or function, but it seems to happen more often when first launching a game.
In the first minutes after restarting from a type 1 crash my computer will abruptly freeze before restarting after about 10 seconds. This usually will happen multiple times before my pc can finally boot. If windows managed to stay running for more than 5 minutes it will not crash in this way until another type 1 crash.
I did another bios update which did not improve the situation. I also had windows perform a disk check on my main drive which also fixed nothing. Any suggestions would be greatly appreciated.
Full Specs: Intel 13900k cpu, Gigabyte Z790 UD AC motherboard, RTX 4080 GPU