Newly Built Computer Won't Stay On
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Posted by kony on December 15, 2006, 10:01 am
Please log in for more thread options >> The Power supply has this temp monitor fan controller thing, and it shows
>> a temp of about 25 C, before the computer shuts down. I've tried starting >> with the knob at high, low, and auto, with the same results, that is shut >> down in about 4 seconds. >> >> I tried to boot before I installed the drives, and got the same results. >> >That particular DDR2-800 memory needs 2.2V and is geared more towards
>overclockers, but I believe that motherboard supplies a maximum of 2.0V to >the memory and is not the best board choice for high voltage memory. Your >memory is probably not supported, so I'd go to the Asus site to get a list >of QVL memory for that motherboard, then do a memory exchange. if you can >get your hands on some DDR2-533 1.8V memory just to see if it'll boot up, >that could rule out other possibilities. > >Also, double-check that both 12V power cords are plugged into the >motherboard. Instable memory should not turn off the system in 4 seconds, it would merely fail to post or crash. This kind of problem is more often one of two sources: 1) PSU itself isn't staying within accepted voltage ranges and shuts off. Might be defective, might be powering defective parts, or a general system build error has shorted something (doubtful since it stays on 4 seconds). The PSU might be checked with a multimeter, monitored right up until the point of shutdown. 2) Motherboard cause, either bios sensor reading out of range (like voltage or fan RPM), or hardware shutdown like CPU temp (particularly if heatsink isn't making contact- a merely marginal heatsink installation wouldn't be bad enough to hit overheat threshold within 4 seconds from cold-off state, it'd have to be removed and the interface inspected to determine this as 4 seconds isn't likely enough time to get to the bios health monitor page to see any readings. | ||||||||||||||||||||||
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Posted by on December 15, 2006, 1:09 pm
Please log in for more thread options kony wrote: > On Thu, 14 Dec 2006 21:20:53 -0700, "RussellS"
> > > >> MB - ASUS M2N-MX GF6100 AM2
> >> MEM - 1G|OCZ DII800 OCZ2P800LP1G R >
> >> The Power supply has this temp monitor fan controller thing, and it shows
> >> a temp of about 25 C, before the computer shuts down. I've tried starting > >> with the knob at high, low, and auto, with the same results, that is shut > >> down in about 4 seconds. > >> > >> I tried to boot before I installed the drives, and got the same results. > >> >
> >That particular DDR2-800 memory needs 2.2V and is geared more towards
> >overclockers, but I believe that motherboard supplies a maximum of 2.0V to > >the memory and is not the best board choice for high voltage memory. Your > >memory is probably not supported, so I'd go to the Asus site to get a list > >of QVL memory for that motherboard, then do a memory exchange. if you can > >get your hands on some DDR2-533 1.8V memory just to see if it'll boot up, > >that could rule out other possibilities. > > > >Also, double-check that both 12V power cords are plugged into the > >motherboard. >
It would be ironic if the PSU were the problem. In the past computers
> Instable memory should not turn off the system in 4 seconds, > it would merely fail to post or crash. > > This kind of problem is more often one of two sources: > > 1) PSU itself isn't staying within accepted voltage ranges > and shuts off. Might be defective, might be powering > defective parts, or a general system build error has shorted > something (doubtful since it stays on 4 seconds). > I've built I always purchased the cheapest case/PSU combo I could find and had no problems. This time I bought in to the advice to get a good PSU, and here I am with a no start! Sigh... > The PSU might be checked with a multimeter, monitored right
> up until the point of shutdown. > > 2) Motherboard cause, either bios sensor reading out of > range (like voltage or fan RPM), or hardware shutdown like > CPU temp (particularly if heatsink isn't making contact- a > merely marginal heatsink installation wouldn't be bad enough > to hit overheat threshold within 4 seconds from cold-off > state, it'd have to be removed and the interface inspected > to determine this as 4 seconds isn't likely enough time to > get to the bios health monitor page to see any readings. | ||||||||||||||||||||||
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Posted by kony on December 15, 2006, 3:28 pm
Please log in for more thread options On 15 Dec 2006 10:09:18 -0800, jbruss@wi.rr.com wrote:
>> 1) PSU itself isn't staying within accepted voltage ranges
>> and shuts off. Might be defective, might be powering >> defective parts, or a general system build error has shorted >> something (doubtful since it stays on 4 seconds). >> >It would be ironic if the PSU were the problem. In the past computers
>I've built I always purchased the cheapest case/PSU combo I could find >and had no problems. This time I bought in to the advice to get a good >PSU, and here I am with a no start! Sigh... Systems use more power now, you'd be even more likely to have a psu problem, or at least early death, with the typical cheapest came-with-case unit. Given a low(er) powered integrated system, as you may have with the integrated video (and sound, lan to lesser extent), many of the branded PSU that come with newer-generation cases might do fine. | ||||||||||||||||||||||
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Posted by RussellS on December 15, 2006, 2:52 pm
Please log in for more thread options
>
> Instable memory should not turn off the system in 4 seconds, > it would merely fail to post or crash. > > This kind of problem is more often one of two sources: > > 1) PSU itself isn't staying within accepted voltage ranges > and shuts off. Might be defective, might be powering > defective parts, or a general system build error has shorted > something (doubtful since it stays on 4 seconds). > > The PSU might be checked with a multimeter, monitored right > up until the point of shutdown. > > 2) Motherboard cause, either bios sensor reading out of > range (like voltage or fan RPM), or hardware shutdown like > CPU temp (particularly if heatsink isn't making contact- a > merely marginal heatsink installation wouldn't be bad enough > to hit overheat threshold within 4 seconds from cold-off > state, it'd have to be removed and the interface inspected > to determine this as 4 seconds isn't likely enough time to > get to the bios health monitor page to see any readings. ------------------------------------------- Although I'd more likely concur with older chipsets, DDR2-based boards are increasingly picky about memory. When the NFORCE430 and P965/G965 chipsets were first released, I had problems with some custom builds, whereby the system wouldn't reach a POST screen, but symptomatically power on, then power off in a never-ending cycle every 3-4 seconds until memory was exchanged for more compatible sticks, immediately solving the issue with no other component or settings changes. Since the OP was mentioning identical symptoms, and is using memory out-of-spec for his board, I suspect memory being the culprit. Russell http://tastycomputers.com | ||||||||||||||||||||||
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Posted by VanShania on December 15, 2006, 1:14 am
Please log in for more thread options could be your power supply. Had same type of problem with an Antec Sonata II
Power supply 450 watt -- Love and Teach, Not Yell and Beat Stop Violence and Child Abuse. No such thing as Bad Kids. Only Bad Parents. The most horrible feeling in the world is knowing that No One is There to Protect You. A64 3500+, Gigabyte GA-K8NSC-939,AIW 9800 Pro 128mb MSI 550 Pro, X-Fi, Pioneer 110D, 111D Antec 550 watt,Thermaltake Lanfire,2 Gb OCZ Platinum 2-3-2-5 2XSATA 320gb Raid Edition, PATA 120Gb XP MCE2005, 19in Viewsonic,BenchMark 2001 SE- 19074 Games I'm Playing- Falcon 4, winSPWW2, winSPMBT, Call of Duty War Chest | ||||||||||||||||||||||
>> MEM - 1G|OCZ DII800 OCZ2P800LP1G R