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Thread: Cool Ambient temps, PC Won't POST

  1. #1
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    Cool Ambient temps, PC Won't POST

    So it's getting into the 40s here at night (Fahrenheit) and when I leave in the morning for work (then about 55*F), the PC will turn on (I can hear it) but it won't even get to the POST. No typical POST "beep," no video, nada. When I leave for work it boots fine. So I checked the temp thresholds of the mobo & hdd:

    HDD is rated at 40F to something
    Mobo is rated to 32F to whatever

    So they both seem to be within their tolernace, but still nada. I haven't checked the ram's ratings yet. Either way none of this should prevent the mobo from POSTing except for the mobo itself, correct? As wintertime progresses, it'll just get worse.

    Is there anything I can do to heat up the system before I leave...I have a remote start, but it's not hooked up.

    -Jon

  2. #2
    Constant Bitrate Vineet Singh's Avatar
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    Condensation? I had a sony digicam that did this when pulled out of the car on ski trips. It even had a warning light for condensation or dew, and wouldn't work right until it went off.

    Powersupplies can supply different than rated voltages, when they are out of their stated temperature range. Maybe there is a wrong amount at the cpu/memory core, or 3.3/5/12v lines?

    91 Stealth RT/TT
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    Operating temp of the psu is 0-45*C which is still within range... :-\

  4. #4
    Constant Bitrate Vineet Singh's Avatar
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    Hook up your remote start lol

    91 Stealth RT/TT
    CarPuter: Inspiron 5150 P4 3.0ghz; Built-in WiFi; Deluo GPS; Radio Shark; OBD1; Nostromo Speedpad
    Audio: Audigy 2 NX; Clarion 500.5 amp; 100.2 center channel amp; Kicker Solo-baric L7 10" Sub
    Display: Lilliput 7" Touchscreen

  5. #5
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    Yeah, I know...I have bigger issues w/ the car I need to resolve first.

  6. #6
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    What mobo?

    I'm having the exact same problem as you are. I thought I had solved my problem by getting one of those Seagate Extreme Environment hard drives, but it turned out that the hard drive wasn't originally causing my problem.

    It doesn't have to be very cold at all for my pc to fail to post. It might be around 50 degrees F in the morning, and I get no beep and no video from the system. I'll usually give it a minute of warm up time, then I have to hold down the power button until it shuts off. After that, it will usually boot up normally.

    So, what hardware do you have? I'm curious to see if we have something in common, because our problems seem identical.

    My hardware:
    VIA EIPA SP13000 mobo
    M2-ATX power supply
    Seagate ST940813AM "Extreme Environment" hard drive
    Toshiba DVD/CD ROM

    One question about hardware, for anyone who might know. Can something on the IDE channel cause a motherboard to not POST? I tried disabling the secondary/master channel (the one that my DVD-ROM is assigned to) thinking that my DVD-ROM might be causing the problem when it get's cold, but it seems to not have helped.

    Keith

  7. #7
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
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    just as a process of elimination, next time it won't post, disconnect all usb devices & then see if it posts... you could be driving yourselves nutz for just a periferal...

  8. #8
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    Mobo: Via Phylon 7F2WE-1G - CN700 Northbridge, C7 1GHz cpu
    Morex carkit psu
    WD 2.5" hdd
    whatever cdrom...

    NO, IDE devices will not prevent the system from POSTing; they are scanned after the POST.


    Happened to me tonight, I did what you did, turn it on and let it warm up a bit then power cycle it...during POST it showed a mobo temp of 8*C (lower limit it 0*C).

  9. #9
    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
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    I had a dell that would not post with one particular periferal connected to the usb from what I remember... pretty sure.... no way it can hurt to try it....

  10. #10
    Constant Bitrate Vineet Singh's Avatar
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    My micro atx AMD K62 400 board used to do this, but since then, the two laptops have never stopped while cold. SOMETIMES, hd would not spin up in them, but it was so cold I could care less about the carputer Around 10f with windchills of -10.

    This is around the time the throttle got stuck on a floor mat, that froze in a wrinkled shape that would lock the pedal once it passed the wrinkle. Lower than 15 degrees, the LCD is useless anyway.

    91 Stealth RT/TT
    CarPuter: Inspiron 5150 P4 3.0ghz; Built-in WiFi; Deluo GPS; Radio Shark; OBD1; Nostromo Speedpad
    Audio: Audigy 2 NX; Clarion 500.5 amp; 100.2 center channel amp; Kicker Solo-baric L7 10" Sub
    Display: Lilliput 7" Touchscreen

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