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Why does it shut off hard for no reason?

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  • Why does it shut off hard for no reason?

    My computer's been shutting off hard on pretty much every trip, sometimes multiple times. It'll shut off completely with a pop noise, wait a few seconds, then startup right away again. I had the circuit board for the screen kind of dangling behind the screen so I fgured that could cause problems like tension or grounding issues so I fixed it to the back of the screen and haven't tested it since. Not sure if that fixed it, but what else could it be? I also figured maybe there was a wire grinding out somewhere but I don't think that's it either. I have all wiring going into the wiring harness and it's all taped up pretty good. The only other thing I could figure it heating issues, but wouldn't they account for that in building the setup? I have the Ampie case and hardware listed in my signature. It has happened while the car was completely still waiting at a drive through window. When it starts up, it boots into Windows, I start Roadrunner, and it starts playing the same song everytime.
    Ampie Case
    2.5" Hard Drive 80GB Samsung 5400RPM
    256 MB DDR2 PC5400
    Xenarc 700TSV - VGA Monitor
    Intel D945GCLF Motherboard
    M2-ATX-HV

    2005 Honda Civic

  • #2
    id check wiring and look to see if theres any loose wires. I have my windows set to not show me error codes etc. so mine has maybe rebooted from a crash once or twice.

    do youself a favor and ghost the drive in case something really gets screwed. then you can have it back up and running the way the system was from the time of that ghost image in no time.

    as for road runer. If it crashes it doesnt save any info on where the track stopped etc, so the next time you load it will automatically start where it did the last time you started up. only time it saves resume info is when your shutting it down or exiting etc. not on a hard crash/reboot.
    MII12000 | 512MB PC3200 | 60GB 2.5" Samsung
    M2-ATX 160W PS | SlotLoad DVD/CDRW | BU353 GPS
    7" Lilliput 619 | WinTV | WIFI | Bluetooth
    Audigy2 ZS | HQCT | Kyocera KR1 Mobile Router(3G)
    Roadrunner | LSXvoid | IGuidance 3


    My Worklog

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    • #3
      just the fact that you had the monitor board 'dangling' back there makes me question your entire install.

      I'd take a look at this thread:http://www.mp3car.com/vbulletin/showthread.php?t=80483 for tips on how to solder anything and make terminations.

      and this thread to determin proper wire and fuse sizing: http://www.mp3car.com/vbulletin/showthread.php?t=81339
      Jan Bennett
      FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

      Please post on the forums! Chances are, someone else has or will have the same questions as you!

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      • #4
        :O good lord you've spent alot on your install. You should have a much better system for that price.
        mp3Car.com Senior Tech Blogger (Want a product reviewed? Contact me.)
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        • #5
          Originally posted by Maheriano
          My computer's been shutting off hard on pretty much every trip, sometimes multiple times. It'll shut off completely with a pop noise, wait a few seconds, then startup right away again. I had the circuit board for the screen kind of dangling behind the screen so I fgured that could cause problems like tension or grounding issues so I fixed it to the back of the screen and haven't tested it since.
          SNIP
          What makes you think it is for no reason.... do you suspect "MAGIC"?

          This is the result of a poor install. You should know this and correct the problems without blaming the equipment or anyone except yourself.

          The reason I am saying these 'harsh' things is your approach and complaining.
          Do better work, get better results.
          TruckinMP3
          D201GLY2, DC-DC power, 3.5 inch SATA

          Yes, you should search... and Yes, It has been covered before!

          Read the FAQ!

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          • #6
            'Taped up pretty good'! 'TAPED up pretty good!' 'TAPED UP pretty good!!!'

            I have highlighted what I believe to be your problem, see above. Taping wires is a sure recipe for intermittent failures.

            Proper termination, splicing, and grounding of the system is a real pain in the ***, but is essential to long term stability of the system.

            Check also that all components on the mobo, all cable connectors, particularly power supply related, are seated properly. Also, make sure you have not added on components which draw too much power on one of the power rails. If you have not added anything to the system, you can ignore that part. If you have but don't know what I'm talking about, read some of the power supply FAQ's that discuss this issue.

            Also, you are drawing power directly from that battery using 10 gauge wire at the least, yes? You wouldn't have hooked it up to your head unit supply, would you?
            Originally posted by ghettocruzer
            I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
            Want to:
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            • #7
              I didn't realize the circuit board was hanging in behind the monitor, I thought the way I secured it had worked until I pulled it out.

              As for the power issue, I'm running 18 gauge wire from the wiring harness to the computer. Mainly because that's the size that came with the harness for the Ampie case.
              Ampie Case
              2.5" Hard Drive 80GB Samsung 5400RPM
              256 MB DDR2 PC5400
              Xenarc 700TSV - VGA Monitor
              Intel D945GCLF Motherboard
              M2-ATX-HV

              2005 Honda Civic

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              • #8
                Shutting hard most of the time cause by loose connector/card/adapter .....
                2004 Matrix XR A7N8X-VM/400 AMD XP-M 2500+, DS-ATX
                89 Supra Turbo P3 [email protected]/Abit BE6 II, Alpine M-BUS Car2PC.
                Y2K Accord Dell GX150
                RoadRunner is the best FE PERIOD
                EmoRebellion is a SCAMMER

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                • #9
                  18 gauge = up to 10 amps at 10'

                  are you pulling mroe than that?
                  Jan Bennett
                  FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

                  Please post on the forums! Chances are, someone else has or will have the same questions as you!

                  Comment


                  • #10
                    Originally posted by Red GTi VR6
                    18 gauge = up to 10 amps at 10'

                    are you pulling mroe than that?
                    Sorry man, I tried to figure out that amps/voltage post in the PSU section and just couldn't figure it out. You're probably going to hate me for this but I'll post what I have.

                    7 inch Xenarc running off molex connector
                    remote lead to 4 channel amp
                    GPS receiver running off USB
                    the Xenarc also running off USB and VGA
                    80 gig 5400 RPM 2.5 inch hard drive running off molex

                    I guess that's it.
                    Ampie Case
                    2.5" Hard Drive 80GB Samsung 5400RPM
                    256 MB DDR2 PC5400
                    Xenarc 700TSV - VGA Monitor
                    Intel D945GCLF Motherboard
                    M2-ATX-HV

                    2005 Honda Civic

                    Comment


                    • #11
                      I assume the monitor is either commected to the PSU or to the same skinny wire in the wiring harness right? Do yourself a favour and actually run a wire from your battery.

                      In mains wiring there are two considerations, voltage drop and heat buildup. The smaller the wire is, the higher the resistance is. When the resistance is higher, the wire heats up more, and there is more voltage drop in the wiring. The former is why you need higher-temperature insulation and/or bigger wires for use in conduit; the latter is why you should use larger wire for long runs.
                      So the wire that is already straining to pull enough current to keep your stuff powered, is heating up, and up, and up until the copper wire causes enough of a voltage drop to send the computer into unstable operation.
                      Then it is just a matter of seconds before the pretty yellow flame of death envelopes you and your car and there goes your over-paid computer.

                      I drew a diagram of this a while ago... I wonder if I still have it...
                      Fusion Brain Version 6 Released!
                      1.9in x 2.9in -- 47mm x 73mm
                      30 Digital Outputs -- Directly drive a relay
                      15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
                      Buy now in the MP3Car.com Store

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                      • #12
                        First fix your dangle (which I think you have from your previous posts) and verify that all your power and grounds are secure like everyone else has suggested.

                        I have had the same experience with my CarPC and it had nothing to do with wiring. Basically my problem was software. I had a bad device driver for my USB GPS reciever and my CarPC would BSOD (Blue Screen Of Death). Now, The screen will NOT turn BLUE if you have automatic restart with a mini dump enabled. The system will appear to turn off and then back on.

                        Your signature doesn't say what OS you are running. This response may be totally off your root cause, but hey, a similar sympton (Hard turn off and then boot up a few seconds later) happened to me and I simply re-installed my drivers and Wah-LA, no more crashing (reboot).


                        You can turn off the automatic restart which will then display a blue screen. Often times the BSOD will point to a specific .dll or .sys file that crashed. This is how I knew to re-install/update my dirver to fix the issue.

                        Anyhow thought I would throw in a different opinion/perspective on your issue.

                        Good Luck with it.

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                        • #13
                          Found my graphical representation of your doom to come:

                          Click image for larger version

Name:	No No.JPG
Views:	1
Size:	45.9 KB
ID:	2256059
                          Fusion Brain Version 6 Released!
                          1.9in x 2.9in -- 47mm x 73mm
                          30 Digital Outputs -- Directly drive a relay
                          15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
                          Buy now in the MP3Car.com Store

                          Comment


                          • #14
                            Toaster.... That is totally awesome.

                            Comment


                            • #15
                              haha that's hot!
                              I'll try the software, but I have some more input. I was just out for a drive and the right side speaker was staticy so I touched the wiring harness in the dash and it cut in and out. I touched it again and it cut in and out again. Obviously the tape is not doing a stellar job of creating the connection between the wires (I've only been told that here about 60 times). But I finally witnessed it first hand and it's possible the same weak connection could be made on the power/ground wire coming out of the harness.

                              Why do you say to run the screen power to the battery? Doesn't it need constant power supply?
                              Ampie Case
                              2.5" Hard Drive 80GB Samsung 5400RPM
                              256 MB DDR2 PC5400
                              Xenarc 700TSV - VGA Monitor
                              Intel D945GCLF Motherboard
                              M2-ATX-HV

                              2005 Honda Civic

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