On this m/b circuit possible control input VIN1 - VIN9 not used - measurement value is not real...
Try check PSU DC Ucc value use hardware multimeter have DC measurement error <= +/-0,5% for loaded output:
+3.3V = 3,15V - 3,45V,
+5V and +5VSB = 4,75V - 5,25V
+12V (-12V) = 10,8V - 13,2V
3,3V...