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#1
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Abit LG-81 random shutdown/heat issue?
Greetings Everyone,
I'm trying to build a new machine, and I've run into some issues here. I grabbed an Abit LG-81 mainboard from an online retailer. I attached an Intel 640 3.2 GHz chip, with a Thermaltake Golden Orb II on it. I equipped this unit with 1GB of PQI Dual DDR Kit (5400) RAM, a Western Digital 320GB hard drive, and recycled a Ben-Q DVD-RAM drive. I've installed a MGE 400W Switching ATX power supply, with 2 fans on the PSU. Problem is, after it is all assembled, and setup, OS is installed, and software (Office, Creative Suite, Various players, burning programs, etc.) is all setup, the machine is exhibiting an issue. Mind you, this didn't start until this machine had been running flawlessly for more than 24 hours. After being booted, and running (mostly at idle) for between 3 minutes and 2 hours, the machine will click off. It does not shut down, it simply clicks off. At first I thought it was a glitch, phenomenon. Then I began to try to reproduce it. Upon first try with Prime95, I was able to make it click off. I initially ran the torture test to see if it was a heat issue. I wanted a program to be able to stress that. I loaded Everest Home Edition, and the FanEQ program that came with the board. I was successful, in a way, to get the machine to click off after about 15 minutes. Now when I say click off, you can literally hear the power supply click, as it's going from the on position to the off position. The fans all spin down, and leds dim and fade away. Windows does not shutdown. Nothing ever gets logged in the event logs. Seems to be hardware related. I spent hours repeating this with mixed results. At one point I enabled the fan alert noise, in the PC Health page in the bios setup. I was actually able to make the machine sing (with this alert beep) several times. During each of these tests, the machine appeared to be normal. The fans would all be spinning, very well I might add. The CPU temp would not exceed 38 degrees Celsius! I continued this testing, and seemed to isolate this as a heat issue. Even while testing, when periodically the temps would read 117 Degrees for a second or two, the chip was never that hot. I could touch the bottom of the heatsink without it being that hot. Not burning. NOT 117C. This seemed to isolate a heat sensor issue, potentially. Even though these high temps were observed, It was only twice, and they NEVER showed over 38 degrees Celsius. I've sat and watched several times, observing temps realtime, and they don't spike, or show above this range at all. The temps slowly climb, then stop @ 38 when the fan's cooling reaches a temperature stasis. I tried to isolate this some more. I went back to the main symptom. The switching power supply is being told to shut off. I wanted to test this, just in case this was software related. It appeared that even if this machine was at idle, it would turn off in an hour or two. I proceeded to download memtest86+ from www.memtest.org. I booted the machine from this disc, and allowed this to run for 26 hours. It made almost 200 passes on this 1GB of ram (in two sticks) and found 0 errors. Now, that's not the power supply. But it does show that the machine can run for 26 hours outside of WindowsXP. I then decided to try another PSU. I grabbed a 500W Antec Neo HE PSU, and installed this in the case. I booted the machine, loaded Windows & Prime95, started testing, and within 10 minutes the machine clicked off. I confirmed this a few times. It's not an issue of the machine not getting enough power. It's stable, and the voltages on both PSU's are reading identical. Both in Windows, and on the Multimeter's screen! Just for kicks, and out of frusteration, I rebooted, and allowed Xp to load. I walked away. 24 hours later, still @ idle, the OS remains, and the machine is still powered up. I've tried applications testing, and mock "working" on the computer, and the error does not occur. In fact, this error occured first @ idle. So, now I'm left pulling my hair out. I'm left with no other option as to why this is happening. I've disabled all warning/shutting down for fan failure/sensor temperature. I've experimented with this, and I've been unable to isolate this further. BTW, latest BIOS (01-16-2006) and all of the WindowsXP updates are installed. Please help me Abit community. -John |
#2
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Abit LG-81 random shutdown/heat issue?
On 24 Jan 2006 19:41:13 -0800, "RetailMessiah"
wrote: BTW, latest BIOS (01-16-2006) and all of the WindowsXP updates are installed. Please help me Abit community. -John Well the really obvious and easy thing to do is test the processor in another MB but thats a problem if you dont have access to another MB. Thats why Im so glad to have 3 systems now which I thought was insane a few years ago. Who needs more than one? But after having so many problems every few months if you dont have access to another system to swap parts ----- even if its a cheap problem to fix until you find out what it is you left with two really bad choices --- pay an arm and a leg at a repair shop or pay an arm and leg constantly buying more and more new replacement parts swapping them out often buying the wrong items. Of course you can avoid all that if someone happens to know the exact solution to your problem cause theyve experienced themselves but the odds are probably slim for that. Whats that 117 C bit about? You kept posting about the CPU staying at 38C but then you mentioned something 117. Obviously if it went up to 117 then thats the problem though you say it was cool to the touch. |
#3
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Abit LG-81 random shutdown/heat issue?
In article .com,
"RetailMessiah" wrote: Greetings Everyone, I'm trying to build a new machine, and I've run into some issues here. I grabbed an Abit LG-81 mainboard from an online retailer. I attached an Intel 640 3.2 GHz chip, with a Thermaltake Golden Orb II on it. I equipped this unit with 1GB of PQI Dual DDR Kit (5400) RAM, a Western Digital 320GB hard drive, and recycled a Ben-Q DVD-RAM drive. I've installed a MGE 400W Switching ATX power supply, with 2 fans on the PSU. Problem is, after it is all assembled, and setup, OS is installed, and software (Office, Creative Suite, Various players, burning programs, etc.) is all setup, the machine is exhibiting an issue. Mind you, this didn't start until this machine had been running flawlessly for more than 24 hours. After being booted, and running (mostly at idle) for between 3 minutes and 2 hours, the machine will click off. It does not shut down, it simply clicks off. At first I thought it was a glitch, phenomenon. Then I began to try to reproduce it. Upon first try with Prime95, I was able to make it click off. I initially ran the torture test to see if it was a heat issue. I wanted a program to be able to stress that. I loaded Everest Home Edition, and the FanEQ program that came with the board. I was successful, in a way, to get the machine to click off after about 15 minutes. Now when I say click off, you can literally hear the power supply click, as it's going from the on position to the off position. The fans all spin down, and leds dim and fade away. Windows does not shutdown. Nothing ever gets logged in the event logs. Seems to be hardware related. I spent hours repeating this with mixed results. At one point I enabled the fan alert noise, in the PC Health page in the bios setup. I was actually able to make the machine sing (with this alert beep) several times. During each of these tests, the machine appeared to be normal. The fans would all be spinning, very well I might add. The CPU temp would not exceed 38 degrees Celsius! I continued this testing, and seemed to isolate this as a heat issue. Even while testing, when periodically the temps would read 117 Degrees for a second or two, the chip was never that hot. I could touch the bottom of the heatsink without it being that hot. Not burning. NOT 117C. This seemed to isolate a heat sensor issue, potentially. Even though these high temps were observed, It was only twice, and they NEVER showed over 38 degrees Celsius. I've sat and watched several times, observing temps realtime, and they don't spike, or show above this range at all. The temps slowly climb, then stop @ 38 when the fan's cooling reaches a temperature stasis. I tried to isolate this some more. I went back to the main symptom. The switching power supply is being told to shut off. I wanted to test this, just in case this was software related. It appeared that even if this machine was at idle, it would turn off in an hour or two. I proceeded to download memtest86+ from www.memtest.org. I booted the machine from this disc, and allowed this to run for 26 hours. It made almost 200 passes on this 1GB of ram (in two sticks) and found 0 errors. Now, that's not the power supply. But it does show that the machine can run for 26 hours outside of WindowsXP. I then decided to try another PSU. I grabbed a 500W Antec Neo HE PSU, and installed this in the case. I booted the machine, loaded Windows & Prime95, started testing, and within 10 minutes the machine clicked off. I confirmed this a few times. It's not an issue of the machine not getting enough power. It's stable, and the voltages on both PSU's are reading identical. Both in Windows, and on the Multimeter's screen! Just for kicks, and out of frusteration, I rebooted, and allowed Xp to load. I walked away. 24 hours later, still @ idle, the OS remains, and the machine is still powered up. I've tried applications testing, and mock "working" on the computer, and the error does not occur. In fact, this error occured first @ idle. So, now I'm left pulling my hair out. I'm left with no other option as to why this is happening. I've disabled all warning/shutting down for fan failure/sensor temperature. I've experimented with this, and I've been unable to isolate this further. BTW, latest BIOS (01-16-2006) and all of the WindowsXP updates are installed. Please help me Abit community. -John The description does sound like THERMTRIP. Get a copy of Throttlewatch here. Intel processors should start to throttle back CPU activity if they think they are starting to overheat. THERMTRIP is set to 20C higher than the throttling temperature. The sensor used is different than the diode that the Winbond monitor chip uses, but the diode used by the internal temperature monitor and the diode, should track quite well. In a sense, observing throttling is an independent way to measure silicon die temperature, as the processor is determining for itself, that it is too hot. http://www.panopsys.com/Downloads.html I'd pull the CPU HSF and have a look at the thermal paste pattern, and see if there is a thin uniform layer and no air voids. I would also examine the install and see if there are signs of excessive forces in the socket area, or see if the heatsink is not sitting flat for some reason. Occasionally, you run into cases of people who have processors that just seem to run too hot internally for the level of cooling provided. Just as the user puts thermal paste between the CPU and the heatsink, Intel also puts their goop between the integrated heat spreader (IHS) and the silicon die. While there are adventurous people who have stripped the IHS from dual core Athlon64, to discover a less than adequate thermal contact inside, I'm not aware of anyone doing similar research on Intel products. The two things I'd check for, as you've already done, is signs that there is an overheat problem, that is hot enough to trigger THERMTRIP. The second thing I'd look for, is a brass standoff underneath the motherboard, that shouldn't be there. Brass standoffs should line up with plated holes, and not touch any copper power tracks underneath the motherboard. That is a nice looking design, BTW. http://www.abit.com.cn/MotherBoard/L...LG-81/l116.jpg I'm really surprised that memtest86 didn't trip it as well. Paul |
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