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Old 02-20-2007, 03:11 PM   #1 (permalink)
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Default Help needed: very low voltage reading

I've recently put together a brand new system. I'm using a MSI K8N Neo4 Platinum/SLI motherboard and a Seasonic S12 550W power supply, both brand new. I downloaded the PC Alert 4 utility from PSI and upon running it, I discovered two problems. One, my system fan reads 0. This is a diagnostic problem of some sort, because I can see the fan running just fine. Two, my voltage meters for +12V reads 2.04 and is flashing red. That seems pretty bad. The other lines read 1.33 (VCore), 3.12V (3.3V), and 4.89 (+5V); all within the guidelines according to the program. I downloaded another utility, Motherboard Monitor 5, to check the readings. They were roughly the same, including a reading of 2.18V for the +12V line.

I'm not a hardware expert, so I'm not sure how to diagnose what the problem is. Can someone please point me in the right direction? Have a hooked a wire up wrong inside? Is the PSU faulty in some way, or the motherboard? How big a deal is this? My graphics card told me it's receiving low voltage and has set itself to the basics to compensate. How can I fix this?

Thanks in advance.
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Old 02-20-2007, 09:17 PM   #2 (permalink)
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I doubt that you actually have a hardware problem if you were able to type all of that and have a functioning computer. If the 12V rail were at 2V, you would not be able to boot your computer

Sometimes in manufacturing, the probes that measure things like voltage or temperature do not report properly. I have a HDD that reports that it is running at something ridiculous like 60 C.

If you are still worried about it, take a voltmeter and measure the voltage between the black pin and the yellow pin on one of your unused molex connectors. This will give you a true reading of what your 12V is at.
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