Overclock.net › Forums › Intel › Intel Motherboards › How do you change voltages on the motherboard
New Posts  All Forums:Forum Nav:

How do you change voltages on the motherboard

post #1 of 3
Thread Starter 
Hello. I'm having trouble with my system being unstable with various different hardwares. I've RMAed most of my system parts and it still gives me the nvlddmkm error. I asked around and they said that if my system is unstable I'll get that error. I tried pretty much everything and I suspect that my motherboard's voltages are wrong...
I have asus p5n-d. through SpeedFan software, it voltages say
Vcore1: 1.26V
Vcore2: 3.20V
+3.3V: 0.00V
+5V: 5.00V
+12V: 11.97V
-12V: -16.72V
-5V: -5.66V
+5V: 4.97V
Vbat: 3.23V
My guess is that +3.3V is wrong because it's not having any voltage(????)
For -12V, it's the maximum -12V? how is it -16.72V... same for -5V being -5.66V
I'm probably wrong about this but can someone tell if these are right settings? and if it's wrong, how do I change it so that it's right? thanks.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q9400 2.66Ghz Quad Asus P5N-D GeForce 250GTS 4GB 
Power
750W 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q9400 2.66Ghz Quad Asus P5N-D GeForce 250GTS 4GB 
Power
750W 
  hide details  
Reply
post #2 of 3
What OS are you running? Vista? 7? 32 bit or 64? Home, Pro, Ultimate, etc..? What exactly is "the nvlddmkm error"? Does it say your driver crashed and has restarted, does it cause BSOD (Blue Screen of Death) or CTD (Crash To Desktop)? That's a driver issue, which is normally not an indicator of a voltage problem.

Having said that, software voltage readings are rarely ever accurate. You need to verify voltages yourself if you want to eliminate that as a possible cause.

Get a multimeter, and unplug your PSU from EVERYTHING except the wall! You can leave it in the case, or pull it out, that won't matter. Next, take a paperclip, bend it in to a U shape and put one part of the U in the back side where the Green wire connects to your 24 pin MoBo power plug. Put the other part of the U shaped paperclip in with a Black Wire. This will turn on your PSU (which has nothing hooked up to it since you're following my instructions, right? Don't worry about getting shocked, I've done this a lot and I've never been bit by the electricity bug.)

Now, use the multimeter and put the black probe in with any of the black wires. Use the Red probe to test voltages on each wire. Start with the wires for your 4 pin Molex adapter (for older hard drives, CD/DVD drives, etc...) I'd also check all the voltages on all the colored wires in your MoBo's power plug. (You can skip green since it's being shorted out to black which is ground)

There should be a sticker on your PSU that will tell you what voltages should run on each color wire. Compare what you see on the multimeter to the results. A bad PSU will screw with all kinds of things.

For the 12v readings, I think the tolerance is somewhere around 5% so about 11.4 to 12.6 should be within tolerance. For the 5v rail, tolerance would be 4.6 to 5.4 (roughly) and for the 3.3v it would be 3.1 to 3.5.

I know this is a massive wall of text, but just take your time, read it slowly if you have to, and report back with all the answers you have when you are done. I'll check back on ya tomarrow and see how you're doing.
Big Baby
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Duo E8400 Wolfdale 3.0 Ghz Asrock P45R2000 WiFi 460 GTX 6GB Patriot Viper DDR3 1333 (2x1GB and 2x2GB) 
Hard DriveOptical DriveOSMonitor
Kingston 64GB SSD, 1TB Hitachi and 3 160GB drives ASUS dual layer SATA II DVD burner Windows 7 Pro 64 Bit and a few virtual machines ;) Hanns.G Hi221D 22" LCD Widescreen 
KeyboardPowerCaseMouse
standard junker nothin' fancy. Yet... HIPER 730 W Rosewill Conqueror Logitech Trackball (TrackMan is the model I think) 
Mouse Pad
The Desk! 
  hide details  
Reply
Big Baby
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Duo E8400 Wolfdale 3.0 Ghz Asrock P45R2000 WiFi 460 GTX 6GB Patriot Viper DDR3 1333 (2x1GB and 2x2GB) 
Hard DriveOptical DriveOSMonitor
Kingston 64GB SSD, 1TB Hitachi and 3 160GB drives ASUS dual layer SATA II DVD burner Windows 7 Pro 64 Bit and a few virtual machines ;) Hanns.G Hi221D 22" LCD Widescreen 
KeyboardPowerCaseMouse
standard junker nothin' fancy. Yet... HIPER 730 W Rosewill Conqueror Logitech Trackball (TrackMan is the model I think) 
Mouse Pad
The Desk! 
  hide details  
Reply
post #3 of 3
First boot to your bios and set system default and reboot using one stick of memory in the first slot. If everything if fine download EVEREST ULTIMATE and check the readings.
My CM sniper
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k 4.8ghz @ 1.4v. ASRock Z68 EXTREME4 GEN3 EVGA gtx470 SC GSKILL SNIPER DDR3 1600 2X4 9.9.9.24 
Hard DriveOptical DriveOSMonitor
CRUCIAL 64GB SSD 1-VR300 4X F3 1TB SAMSUNG 22X SATA DVD BURNER WINDOWZ 7 64BIT 23'' ACER P235H WS 
KeyboardPowerCaseMouse
LOGITECH G15 V 2007 CORSAIR TX750 CM STORM SNIPER/ MODDED OCZ DOMINATRIX 
Mouse PadAudio
ALL OVER THE TABLE ON BOARD 
  hide details  
Reply
My CM sniper
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k 4.8ghz @ 1.4v. ASRock Z68 EXTREME4 GEN3 EVGA gtx470 SC GSKILL SNIPER DDR3 1600 2X4 9.9.9.24 
Hard DriveOptical DriveOSMonitor
CRUCIAL 64GB SSD 1-VR300 4X F3 1TB SAMSUNG 22X SATA DVD BURNER WINDOWZ 7 64BIT 23'' ACER P235H WS 
KeyboardPowerCaseMouse
LOGITECH G15 V 2007 CORSAIR TX750 CM STORM SNIPER/ MODDED OCZ DOMINATRIX 
Mouse PadAudio
ALL OVER THE TABLE ON BOARD 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel Motherboards
Overclock.net › Forums › Intel › Intel Motherboards › How do you change voltages on the motherboard