I have the following Threadripper 1920x 32gb ram (4x8gb sticks in dual channel) Radeon 550 Gigabyte X399 Aorus 2x NVME SSD, 970 pro and 980 pro NZXT closed loop 280mm radiator sitting at 35c idle 66c after 6 hour cpu-z stress test. Neo eco 620w PSU I'm getting random hard locks with looping audio and frozen screen daily. Usually while web browsing or doing nothing in particular. I've run the windows memory diagnostic with no errors. I've swapped out 1 stick at a time per week and seen if the crashes are less frequent, 16gb seems to crash every few days, 32gb can be daily but its still fairly random. I used to run an overclock but I've since reverted to stock clocks with AMD Cool and Quiet disabled so it just permanently sits on 3.4ghz now. I tried up volting at stock clocks as well with no change. I declocked the memory to 2400mhz (3.2ghz capable). BIOS is up to date. I have another old video card I might try swapping in (GTX970) Other than that, how else can I diagnose these hard crashes? It doesn't seem to be stress related as RAM and CPU stress are fine and the crashes seem to occur at close to idle conditions.