+12V rail at 1.15V? (Stop Errors)

mentalnote · 02-12-2008, 02:04 PM

My comp has been having issues since the day I bought it, leading to the PSU, CPU and case being th only original parts in it.
The problem I'm having at the moment with it is that after using it for a while the system will halt with a stop error. The annoying thing is the stop error tends to be rather random, one time it's a prob with ntfs.sys, another time npv4_disp.dll (or whatever that nVidia driver is called), another time DRIVER_IRQL_IS_NOT_EQUAL_OR_LESS or something like that. Those are the main ones I can remember, but I get others as well. After I get one of these my comp will refuse to load windows, giving me either another stop error when it starts loading or a black screen with white text saying "TRAP 0000006 EXCEPTION" and giving a list of what looks like assembler variable values.
I've only had the mobo and GPU for a couple of months which are GA-P35C-DS3R and GeForce 8500 GT respectively of which both have solid capicitors, so I don't think it's either of those.
I've swapped out the hard drive for one from another computer, which rules out the Hard drive or software as the cause. I also disconnected the DVD Drive when I did, meaning its not a hardware conflict with that. I've run memtest 86+ which had no errors after 7 passes.
I have suspicions it might be the power supply as I got these voltages from "Everest Home Edition" (I don't think the +12V rail voltage should be that low) but I don't know much about PSU's so I wouldn't know for sure.
Voltage Values
CPU Core 1.14 V
+2.5 V 2.00 V
+3.3 V 3.33 V
+5 V 5.08 V
+12 V 1.15 V
+5 V Standby 5.24 V
VBAT Battery 3.07 V
Any help very much appreciated.
The PSU is a "Nexgen PS-400"

scapedriver · 02-12-2008, 02:17 PM

PSU with 12v rail 28a with your rig.

mentalnote · 02-12-2008, 02:23 PM

I need to replace the PSU?
the +12v thing on my PSU says 14a.

scapedriver · 02-12-2008, 07:53 PM

Yes 8500gt 12v rail is 20amp by manufacture , buy PSU with 12v rail 28amp this will allow upgrading down the road.

Jebtall · 02-12-2008, 09:45 PM

You can't rely on software to give you accurate PSU voltage measurements. If you want to check the 12V rail use a voltmeter. While the computer is running grab a free 4 pin molex connector and check the voltage at the yellow wires, this should be the 12V supply.

If you really only had 1.15V on the 12V supply your computer would not be running.

If you measure 12V (or close to it) then check the 5V (orange wire typically) and the 3.3V (red wire typically). If those are close to what they should be then your PSU may not be the problem, although it still could be the problem. Do a search and somewhere on this forum is a good write up on doing more PSU diagnostics with a multimeter, if you don't have a multimeter you can get an OK one on sale from Sears for less than $20.

Interesting, one of the few mobo's that doesn't have on board video. I was going to suggest taking the video card out and just use the on board video and see what happens, but that is out. Do you have another video board you can put in to see what happens?

I assume you have updated the bios and are using most recent nVidia drivers.

Another thing to try is boot into safe mode and see if you get any errors then.

mentalnote · 02-12-2008, 11:35 PM

Regardless of the PSU being the cause of the problem I think Ill get a new one anyway, as awhile ago I got the video card saying that it needed to reduce performance due to insufficient power, it did this multiple times so I figure it would have been a substantial decrease in performance.
My comp has the aforementioned GPU and mobo, Core 2 Duo 1.6Ghz CPU, 1 160GB IDE Hard drive, 1 16x DVD Drive, DDR2 512MB RAM and an extra 120mm fan.
What would be a good PSU for this system?

scapedriver · 02-12-2008, 11:43 PM

14a -12v rail is not enough amps, his GPU calls for 20a - 12v rail , I suggest 650w PSU with 28amp or better -12v rail.

mentalnote · 02-12-2008, 11:46 PM

Thanks for the advice. Gonna go buy tomorrow.

Jebtall · 02-12-2008, 11:59 PM

Here are a couple of options that will work for you:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371007
This will set you back $80.
Another lower cost option is:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817103940
This is $50 after a $35 rebate.

Both are good 500W PSU.

Unless you plan on upgrading your system as time goes on, you really don't need to spend more money a PSU. If you plan on upgrading, you might want to go ahead and spend more now.

Jebtall · 02-13-2008, 05:53 AM

Messed up the links, here are corrected:
http://www.newegg.com/Product/Produc...82E16817103940
http://www.newegg.com/Product/Produc...82E16817371007

Tumbleweed36 · 02-13-2008, 05:58 AM

The Antec models (Neo He and Earthwatts) listed by Jebtall are both excellent, high quality power supplies, but the Chiefmax listed previous to that is a very low quality piece of junk.

Tumbleweed36 · 02-13-2008, 09:46 AM

Quote:

Originally Posted by scapedriver

both are execellet non "20a or above 12v rail" called for by the GPU manufacture!!!, I use the one posted without any probllems.

I think you need to read more and become familar with and understand power supplies. There is no tech who I know that would ever recommend one of these two supplies.

We will just have to disagree on this one. Buyer Beware!!!!

scapedriver · 02-13-2008, 10:05 AM

I understand them, Im running one now aprox. 1 year without problems . 8600GT GPU / 3 sata drives / 2 dvd drives / water cooling system.

We install them in our system builds,

And Antec failure rate is ?? I've installed 125.00 PSU's that were defective.

Newegg's psu links posted, the 12v rail does not meet the GPU required rail amps

**mattlock** · 02-13-2008, 11:01 AM

The Antec failure rate on the Seasonic made units is low. We have high standards for recommending PSUs, and recommend only quality built units and do our research on each unit that we recommend.

We do not recommend Bargain basement PSUs. (The Chiefmax would fall into the catagory) You can't buy a quality PSU for $20.

Power Supply Information and Selection

Jebtall · 02-13-2008, 07:09 PM

Quote:

Originally Posted by scapedriver

I understand them, Im running one now aprox. 1 year without problems . 8600GT GPU / 3 sata drives / 2 dvd drives / water cooling system.

We install them in our system builds,

And Antec failure rate is ?? I've installed 125.00 PSU's that were defective.

Newegg's psu links posted, the 12v rail does not meet the GPU required rail amps

No 8500GT video card out there needs 12V @ 20A or 240W of power. Think about it, the PCIe slot only supports something around 75W. I could find no 8500GT card with an external power connector to supply the other 165W of power if your power requirements are true.

With the OPs system, a good 500W PSU will be more than adequate.

mentalnote · 02-14-2008, 04:59 AM

I got a new PSU from a PC repair shop for AUD$55, it's a "Power Case 500W" (didn't want to order online as I live in Aus and it would take forever to get here). I know it's generic but the guy there said that he'd used them to build systems with 8800 GT's and they've run fine with no probs as of yet, it also comes with a 2 year warranty. I'll probably upgrade my PSU before that point anyway so I figured why buy the $190 PSU.
Anyway, my computer seems to be working fine with no problems now, so thanks for all the support I've been given.

Tumbleweed36 · 02-14-2008, 05:19 AM

We are happy you have it up and running. Good luck with your rig.

**FreoHeaveho** · 02-14-2008, 03:56 PM

The problem with a 55 buck psu is, that although it will fire up ok, it will fail sooner rather than later. you can get quality psu's from australia no problem, plus when a crappy psu fails, say goodbye to other components too. glad its working, but upgrade soon for your own sake.

mentalnote · 02-14-2008, 10:22 PM

Erm... looks like the same thing is happening again. Could it be the RAM? I did a memtest as stated in the original post but I've heard that doesnt necessarily pick up all memory probs. I've also taken it out, cleaned it with an eraser and reseated it, with the same result.
Can faulty RAM cause random stop errors and whatnot?

Tumbleweed36 · 02-15-2008, 04:46 AM

Faulty ram can cause many errors. In addition, a poor or weak power supply can actually harm ram. What I suggest is that you try only one stick and see if you get the errors. If it still acts up, then try the other stick. That might pinpoint the issue.

02-12-2008, 02:04 PM	#1 (permalink)
mentalnote Registered User Join Date: Feb 2008 Posts: 10 OS: Windows XP SP2	+12V rail at 1.15V? (Stop Errors) My comp has been having issues since the day I bought it, leading to the PSU, CPU and case being th only original parts in it. The problem I'm having at the moment with it is that after using it for a while the system will halt with a stop error. The annoying thing is the stop error tends to be rather random, one time it's a prob with ntfs.sys, another time npv4_disp.dll (or whatever that nVidia driver is called), another time DRIVER_IRQL_IS_NOT_EQUAL_OR_LESS or something like that. Those are the main ones I can remember, but I get others as well. After I get one of these my comp will refuse to load windows, giving me either another stop error when it starts loading or a black screen with white text saying "TRAP 0000006 EXCEPTION" and giving a list of what looks like assembler variable values. I've only had the mobo and GPU for a couple of months which are GA-P35C-DS3R and GeForce 8500 GT respectively of which both have solid capicitors, so I don't think it's either of those. I've swapped out the hard drive for one from another computer, which rules out the Hard drive or software as the cause. I also disconnected the DVD Drive when I did, meaning its not a hardware conflict with that. I've run memtest 86+ which had no errors after 7 passes. I have suspicions it might be the power supply as I got these voltages from "Everest Home Edition" (I don't think the +12V rail voltage should be that low) but I don't know much about PSU's so I wouldn't know for sure. Voltage Values CPU Core 1.14 V +2.5 V 2.00 V +3.3 V 3.33 V +5 V 5.08 V +12 V 1.15 V +5 V Standby 5.24 V VBAT Battery 3.07 V Any help very much appreciated. The PSU is a "Nexgen PS-400" Last edited by mentalnote; 02-12-2008 at 02:06 PM. Reason: extra info added

02-12-2008, 02:17 PM	#2 (permalink)
scapedriver Registered User Join Date: Feb 2008 Posts: 82 OS: XP Pro SP2 My System	Re: +12V rail at 1.15V? (Stop Errors) PSU with 12v rail 28a with your rig.

02-12-2008, 02:23 PM	#3 (permalink)
mentalnote Registered User Join Date: Feb 2008 Posts: 10 OS: Windows XP SP2	Re: +12V rail at 1.15V? (Stop Errors) I need to replace the PSU? the +12v thing on my PSU says 14a.

02-12-2008, 07:53 PM	#4 (permalink)
scapedriver Registered User Join Date: Feb 2008 Posts: 82 OS: XP Pro SP2 My System	Re: +12V rail at 1.15V? (Stop Errors) Yes 8500gt 12v rail is 20amp by manufacture , buy PSU with 12v rail 28amp this will allow upgrading down the road.

02-12-2008, 09:45 PM	#5 (permalink)
Jebtall Registered User Join Date: Feb 2008 Posts: 85 OS: xp	Re: +12V rail at 1.15V? (Stop Errors) You can't rely on software to give you accurate PSU voltage measurements. If you want to check the 12V rail use a voltmeter. While the computer is running grab a free 4 pin molex connector and check the voltage at the yellow wires, this should be the 12V supply. If you really only had 1.15V on the 12V supply your computer would not be running. If you measure 12V (or close to it) then check the 5V (orange wire typically) and the 3.3V (red wire typically). If those are close to what they should be then your PSU may not be the problem, although it still could be the problem. Do a search and somewhere on this forum is a good write up on doing more PSU diagnostics with a multimeter, if you don't have a multimeter you can get an OK one on sale from Sears for less than $20. Interesting, one of the few mobo's that doesn't have on board video. I was going to suggest taking the video card out and just use the on board video and see what happens, but that is out. Do you have another video board you can put in to see what happens? I assume you have updated the bios and are using most recent nVidia drivers. Another thing to try is boot into safe mode and see if you get any errors then.

02-12-2008, 11:35 PM	#6 (permalink)
mentalnote Registered User Join Date: Feb 2008 Posts: 10 OS: Windows XP SP2	Re: +12V rail at 1.15V? (Stop Errors) Regardless of the PSU being the cause of the problem I think Ill get a new one anyway, as awhile ago I got the video card saying that it needed to reduce performance due to insufficient power, it did this multiple times so I figure it would have been a substantial decrease in performance. My comp has the aforementioned GPU and mobo, Core 2 Duo 1.6Ghz CPU, 1 160GB IDE Hard drive, 1 16x DVD Drive, DDR2 512MB RAM and an extra 120mm fan. What would be a good PSU for this system?

02-12-2008, 11:43 PM	#7 (permalink)
scapedriver Registered User Join Date: Feb 2008 Posts: 82 OS: XP Pro SP2 My System	Re: +12V rail at 1.15V? (Stop Errors) 14a -12v rail is not enough amps, his GPU calls for 20a - 12v rail , I suggest 650w PSU with 28amp or better -12v rail.

02-12-2008, 11:46 PM	#8 (permalink)
mentalnote Registered User Join Date: Feb 2008 Posts: 10 OS: Windows XP SP2	Re: +12V rail at 1.15V? (Stop Errors) Thanks for the advice. Gonna go buy tomorrow.

02-12-2008, 11:59 PM	#9 (permalink)
Jebtall Registered User Join Date: Feb 2008 Posts: 85 OS: xp	Re: +12V rail at 1.15V? (Stop Errors) Here are a couple of options that will work for you: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371007 This will set you back $80. Another lower cost option is: http://www.newegg.com/Product/Product.aspx?Item=N82E16817103940 This is $50 after a $35 rebate. Both are good 500W PSU. Unless you plan on upgrading your system as time goes on, you really don't need to spend more money a PSU. If you plan on upgrading, you might want to go ahead and spend more now.

02-13-2008, 05:53 AM	#10 (permalink)
Jebtall Registered User Join Date: Feb 2008 Posts: 85 OS: xp	Re: +12V rail at 1.15V? (Stop Errors) Messed up the links, here are corrected: http://www.newegg.com/Product/Produc...82E16817103940 http://www.newegg.com/Product/Produc...82E16817371007 Last edited by Jebtall; 02-13-2008 at 05:56 AM.

02-13-2008, 05:58 AM	#11 (permalink)
Tumbleweed36 Asst Manager Hardware Join Date: May 2005 Location: USA Posts: 19,656 OS: XP Professional	Re: +12V rail at 1.15V? (Stop Errors) The Antec models (Neo He and Earthwatts) listed by Jebtall are both excellent, high quality power supplies, but the Chiefmax listed previous to that is a very low quality piece of junk. __________________ ---------- I don't receive email notifications of replies to subscribed threads. (Internet provider policy) Therefore, if I don't respond to your post within 24 hours, please send me a reminder PM and include the link to your thread. Last edited by Tumbleweed36; 02-13-2008 at 06:03 AM.

02-13-2008, 10:05 AM	#13 (permalink)
scapedriver Registered User Join Date: Feb 2008 Posts: 82 OS: XP Pro SP2 My System	Re: +12V rail at 1.15V? (Stop Errors) I understand them, Im running one now aprox. 1 year without problems . 8600GT GPU / 3 sata drives / 2 dvd drives / water cooling system. We install them in our system builds, And Antec failure rate is ?? I've installed 125.00 PSU's that were defective. Newegg's psu links posted, the 12v rail does not meet the GPU required rail amps Last edited by scapedriver; 02-13-2008 at 10:10 AM.

02-13-2008, 11:01 AM	#14 (permalink)
mattlock Mentor Hardware Team Join Date: Dec 2005 Location: Ohio Posts: 4,183 OS: XP SP2, Win 7 Beta, Win 7 RC My System	Re: +12V rail at 1.15V? (Stop Errors) The Antec failure rate on the Seasonic made units is low. We have high standards for recommending PSUs, and recommend only quality built units and do our research on each unit that we recommend. We do not recommend Bargain basement PSUs. (The Chiefmax would fall into the catagory) You can't buy a quality PSU for $20. Power Supply Information and Selection __________________ Matt Everest-Thermal Paste Instruction-Power Supply Info-Sensorview PSU Calculator-Speedfan-Bench Test Help TSF Fight Disease. It's Free! Last edited by mattlock; 02-13-2008 at 11:03 AM.

02-14-2008, 04:59 AM	#16 (permalink)
mentalnote Registered User Join Date: Feb 2008 Posts: 10 OS: Windows XP SP2	Re: +12V rail at 1.15V? (Stop Errors) I got a new PSU from a PC repair shop for AUD$55, it's a "Power Case 500W" (didn't want to order online as I live in Aus and it would take forever to get here). I know it's generic but the guy there said that he'd used them to build systems with 8800 GT's and they've run fine with no probs as of yet, it also comes with a 2 year warranty. I'll probably upgrade my PSU before that point anyway so I figured why buy the $190 PSU. Anyway, my computer seems to be working fine with no problems now, so thanks for all the support I've been given.

02-14-2008, 05:19 AM	#17 (permalink)
Tumbleweed36 Asst Manager Hardware Join Date: May 2005 Location: USA Posts: 19,656 OS: XP Professional	Re: +12V rail at 1.15V? (Stop Errors) We are happy you have it up and running. Good luck with your rig. __________________ ---------- I don't receive email notifications of replies to subscribed threads. (Internet provider policy) Therefore, if I don't respond to your post within 24 hours, please send me a reminder PM and include the link to your thread.

02-14-2008, 03:56 PM	#18 (permalink)
FreoHeaveho TSF Enthusiast Join Date: Aug 2006 Location: Australia Posts: 3,213 OS: Windows Vista Ultimate 64 SP2, Windows XP Professional SP3, Mac OSX Leopard My System	Re: +12V rail at 1.15V? (Stop Errors) The problem with a 55 buck psu is, that although it will fire up ok, it will fail sooner rather than later. you can get quality psu's from australia no problem, plus when a crappy psu fails, say goodbye to other components too. glad its working, but upgrade soon for your own sake. __________________ PC Wizard-VGA 2009 Charts-Power Supply Info-Multi/Single Rail PSU?-Speedfan-Driver Sweeper

02-14-2008, 10:22 PM	#19 (permalink)
mentalnote Registered User Join Date: Feb 2008 Posts: 10 OS: Windows XP SP2	Re: +12V rail at 1.15V? (Stop Errors) Erm... looks like the same thing is happening again. Could it be the RAM? I did a memtest as stated in the original post but I've heard that doesnt necessarily pick up all memory probs. I've also taken it out, cleaned it with an eraser and reseated it, with the same result. Can faulty RAM cause random stop errors and whatnot?

02-15-2008, 04:46 AM	#20 (permalink)
Tumbleweed36 Asst Manager Hardware Join Date: May 2005 Location: USA Posts: 19,656 OS: XP Professional	Re: +12V rail at 1.15V? (Stop Errors) Faulty ram can cause many errors. In addition, a poor or weak power supply can actually harm ram. What I suggest is that you try only one stick and see if you get the errors. If it still acts up, then try the other stick. That might pinpoint the issue. __________________ ---------- I don't receive email notifications of replies to subscribed threads. (Internet provider policy) Therefore, if I don't respond to your post within 24 hours, please send me a reminder PM and include the link to your thread.