Just for comparison......I have the same PSU on my pc with Q6600 cpu, 4 GBs DDR2 PC 6400, 2x 500 GB & 2x 320 GB Sata H.D.s, onboard audio/video, stock cpu cooler, 2 120 mm case fans, 1 cd drive, 1 DVD/CD sata multi-drive, floppy drive. My voltage readings using Intel's Desktop Utilities 3.0 are:
+5v.................... 4.933-4.958 V
+3.3v................. 3.203-3.230 V
+1.5v................. 1.243-1.253 V
Processor Vccp.... 1.074-1.102 V
I'm guessing that your readings may not be accurate. They are WAY to far off approved voltages on the +3.3v and the +12v. Perhaps you should try using another psu monitoring program and see if it gives you voltages within the allowable variations.
Forgot to mention.......you could check in your bios and see if it gives you voltage readings that vary much from the ones you got with PC Wizard 2008. I don't have a lot faith in the accuracy of software cpu voltage monitoring.
Yea your 3v is WAY off and your 12 v is too high by a bit.
If I were you I would get a multimeter and test your Power Supply or, take it somewhere to be tested (not a freak squad or chain store...a REAL computer store), or just replace it. Not worth the risk.
Be sure to check if that software you are using is giving weird readings for anyone else. And as someone else said, look all throughout your bios, you 'should' be able to check this information out through the bios. If in the bios it has the same numbers, then you need to shut down adn replace that thing before it kills your system.
I think if the voltages reported in the bios are within the parameters shown on the Antec website that it may be possible that the nVidia graphics card drivers may be causing the instability on your pc. I have another pc with an nVidia PCIE graphics card and Vista Home Premium and it is no where near as stable as my Vista Ultimate pc using onboard graphics. I've updated the graphics driver several times following their exact instructions and never have been able to get that pc to run like the one using onboard graphics. Also, I note in your component description that you might be using 4 GB of RAM........The maximum Vista will recognize is 3 GB if you are using the 32 bit O.S. I don't think that using 4 GB will cause problems in 32-bit but you might try removing a couple of sticks and see if that improves things?