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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
    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
    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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    • #3
      Operating temp of the psu is 0-45*C which is still within range... :-\

      Comment


      • #4
        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

        Comment


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

          Comment


          • #6
            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

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            • #7
              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...
              MY NEWEST INSTALL:modded infiniti fx with big screen

              first windows carpc install........my liquid cooled LVDS screen :D

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              • #8
                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).

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                • #9
                  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....
                  MY NEWEST INSTALL:modded infiniti fx with big screen

                  first windows carpc install........my liquid cooled LVDS screen :D

                  Comment


                  • #10
                    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

                    Comment


                    • #11
                      Global warming my ***! It's snowing outside! lol! Didn't expect that at all at this point. It's not even flurries, the ground is half covered, my car is covered, and it's DENSE.

                      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

                      Comment


                      • #12
                        Hey, i know im a few days late, but your describing the exact same problem i am having, and i too have the M2-ATX power supply.

                        I have no clue why this works, but i just ran a reset button out of the case so i can just hit that instead of waiting for the shutdown procedure to complete, and 100% of the time now, when it doesnt post beep after turning the car on, if i hit the reset button, it post beeps and goes to memory test. Ive also noticed lately that my M2 doesnt send a pulse to the motherboard when i cut accessory power, so my system just sits there for 45 seconds and just does a hard poweroff while windows is still running. Ive been having to manually start the shutdown procedure before turning my car off. I think it could be a combination of small problems in my case, but they all seem to be coming from the M2. Perhaps i should just look for an alternative power supply and enclosure.

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                        • #13
                          Originally posted by Vineet Singh View Post
                          Hook up your remote start lol
                          Even if i use my remote start the power supply will not start unless I stick the actual key into the IGN... so no point really


                          -Emo

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                          • #14
                            It was meant to warm up the car a little, then worry about your carputer.

                            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

                            Comment


                            • #15
                              I experience a similar problem but traced my problems back to the screen and not the PC itself.

                              I have an AMD Turion 64 setup with a Gigabyte MB. I orginally had a problem with the computer sticking on the POST screen after detecting the CPU but before the memory. I swapped memory sticks, same problem. I used compressed air on the board and no more problems there.

                              Living in Michigan, the temps are dipping down low at night. When I first turn the car on in the morning the screen shows power but doesnt display anything (even though the PC is fully booted). It takes the screen warming up to turn on before it will work. If I use my remote start, no problem. If not? I have to run the car a little bit until it warms up and it kicks right on.

                              The screen is WELL within the operating tempatures set by the manufacturer so maybe it is the condensation? When the screen comes on cold the colors are dull and within minutes while it warms up it they go normal.

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