If you are using an AMD graphics board, you can try installing the old driver mentioned in this post, and it might solve your problem (it worked for me).
Unfortunately, we still haven’t figured out what is causing this full PC/GPU crash problem, or if there are multiple causes. It’s almost certain that there is a DX12 feature involved, and in my case interacting with UI elements like content browser items or material graph nodes sometimes causes visual corruption and triggers it, but other than that, I dunno.