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5volt showing .6 volt in bios ???

post #1 of 6
Thread Starter 
Asrock mo/brd - Model G31M-VS2
Using a known good psu that is 20 pin on the 24 pin connector on the board.
Also tried a 24 pin psu I believe to be good.
Just added a new cpu to this board. It's a dual quad conroe kentsfield.
There was a dual core cpu in this board and the voltages in the bios were all correct.
After the changes, the bios is showing the 5 volts as being only 0.61 volts.

What is going on with this thing ?
thanks for any help.

more info on this thing. booted the system into windows, than put the multimeter on both the 12volt and 5volt lines via a free mulox connector:
12volt is a little high. 5volt is reading 6.3volts.
This is a new power supply.
Can anyone help make sense of this mess?
post #2 of 6
If your DMM is showing 6.3V, then that's bad. Very bad.

Which PSU do you have?
It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #3 of 6
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

If your DMM is showing 6.3V, then that's bad. Very bad.

Which PSU do you have?

The one in there right now is a Power Man. That's currently reading 12 volt at 15 volts and 5 volt at 6.3 volts.
The one I had in before that was a printaform. A third one we tried was a Golden Field.
The Printaform also had similar high reading for both 5 volt and 12 volt..


Also very concerned in finally getting some sense out of those insane bois reading for the 5 volt, consistently 0.60 to 0.62 volts with multiple power supplies giving us the same results. All the other voltages in the bios are fine, just that 5 volt is insane and it's consistently non-sensible. The 12 volt in the bios is normal, so are the other voltages in the bios.

Thanks for the reply and any more help in understanding what is going on here.
post #4 of 6
Yeah, all 3 of those PSUs are "avoid at all costs" PSUs. They are definitely not "good" PSUs. They're quite the opposite. Replace ASAP with a PSU from this list:

http://www.overclock.net/t/183810/faq-recommended-power-supplies

Or, I can help you shop for one without breaking the bank.

This is a bit of an emergency because the longer your system is powered with this extremely dirty and unstable power, the shorter the lifespan of your whole computer can be. Everything is at risk, and it gets worse when you put any substantial load on it, such as a video game. I'd resort to just e-mail and internet at the most until you get a better PSU.
It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #5 of 6
Thread Starter 
Thanks so much for all the help. More updates here:

Just put the little meter on yet another computer here. Both 5 volt and 12 volt on this computer are also reading high in keeping with the other box I'm working on with this problem. So it's telling me my meter is reading about 20% high. My Bad! I've got a better meter, not here, can get it in next couple of days and will re-check everything then. This known good working box also just has a generic 500 watt psu in it, we have never paid real money for computer psu's here I'm afraid.

Can we in the meantime focus on that weird bios reading of 0.6 volts for the 5 volt. What am I too make of that phenomenon?
I had all good Bios readings in volts and when I changed my cpu from a dual core to a quad core the voltage readings stayed the same all but the 5 volt.
I did not know what to do. so I put the dual core back in the board and it did not fix the problem. all I did was swap out cpu. and the swapped back and now all volt readings are the same but the 5volt which is reading 0.6. ??
post #6 of 6
Oh, that's getting way out of my league. :/

Still, I wouldn't trust any computer to a generic PSU. The PSU is an investment. Those generic PSUs deliver a very noisy, dirty and very unstable quality of power that's fairly harmful to the sensitive electronics of a computer. Many people experience random computer problems simply by powering their computer with a generic PSU.
It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
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