+12v reading

Totally inaccurate.
Never ever trust software readings. For a start, the PC would not even boot at those voltages.

If you want to chekc voltages, get a multimeter.
 
I agree with PhillyDee never trust software for voltage readings, i had same issue with various systems of mine not reading voltages correctly, using a multimeter showed the voltage was spot on - Which yours look fine :)
 
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