I use a Hardware Monitor application. The room is 22 deg C. Well, the sensor does seem to work okay, since when it is first started, the temperature is nice and low at 32 degrees C, then it starts to rise. Also, at first, when it was crashing, the temperatures were about 65 degrees. I correctly oriented the fan. PSU fans were replaced with quieter ones. Original ones were 37 CFM, these are 30 CFM.