the mobo might not have a sensor get into the bios and goto pc health/hardware monitoring and report back with the voltages , if you dont have any of em then it defintly dont have a sensor in that case i suggest youll get a digital multimeter (will cost around 20$) measure the voltages with it and report back,see these guides http://www.driverheaven.net/guides/testingPSU/ http://www.ochardware.com/articles/psuvolt/psuvolt.html
that's a old workstation computer that doesn't have that info in the bios. you can barely change anything in his bios and you can't check anything either
