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Tried to install new PSU to new motherboard. FAIL pics included

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  • Tried to install new PSU to new motherboard. FAIL pics included

    Cant get this thing to turn on. Just the motherboard LED flashes once when its first connected and thats it! I dont get it, I think I wired something incorrectly. Components were replaced with the same ones that were there before, m2-atx power source and a Intel Atom D945GCLF2 motherboard. Here are up close pics if anyone can spot my error, any help is greatly appreciated











  • #2
    If it won't turn on, check the jumpers on the power supply and then make sure you have the polarity correct on the power switch jumper wire that goes from the power supply to the motherboard header.
    1999 Mercury Grand Marquis GS with: ASRock E350M1 w/4GB RAM, 80GB Intel SSD, Opus DCX3.120, Visteon HD Radio + HDR-USB, PL-18N wifi, OBDLink Scan Tool, BTA6210 BT, BU-353, Win 7 Ultimate, CF 4.0, Alpine MRP-F240 + MRP-T220, RF Punch 1572s, Kicker 8" Comp.

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    • #3
      Are you powering from car battery or ac power supply on bench? or is it in the car. getting enough voltage to m2 SNO
      Last edited by SNOtwistR; 10-03-2011, 11:22 PM.

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      • #4
        Not sure if I follow. Which one is the connector at the head of the motherboard?

        Also which floppy drive plug are you referring to?

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        • #5
          I corrected myself i saw the 4 pin connector near the cd audio plug at first i thought it was the floppy power connector plugged into mainboard

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          • #6
            Tried both. Like I said it was working fine until I shorted something out. So I replaced motherboard and no results so I replaced the power supply. Both new. Just don't know how to get exactly wire it up now. All the installation guides I find are for other motherboards.

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            • #7
              is it me or are wires from the ATX connectors missing?
              CarPc
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              http://www.mp3car.com/vbulletin/work...ct-driver.html

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              • #8
                I think CHRIS350 has nailed it! too many cables missing on both 20pin plugs from psu to motherboard. Seem to be missing 2x 12v(yellow) cables on the end of both plugs and a 5v(red) cable on the other side of plugs as well as 2-3 negative(black) cables. Perhaps try using your old 20pin atx cable from old psu? Or at least compare the 2 of them to see if there's much difference. When i look at my m2 atx 20pin plug, there is only 1 cable missing( not sure of pin number).

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                • #9
                  Given that the m2 atx cables are fine then perhaps try these 2 options.
                  1: On the PSU, swap the ACC+ and the B+(12v) cables and try boot.
                  2:On the PSU, disconnect ACC+ and the Power switch on jumper cable. Get a thin piece of cable or wire and join both ends to the end of the Power on jumper cable for a second and remove. system should power up.

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                  • #10
                    Pcmoto, i removed the jumper, which was on position B, and switched the Ace and 12v cables, and it started right up! But what does this mean now? Will it still automotive when the car turns on and hibernate when the car shuts off? I'm not sure what this means now that I made those changes.

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                    • #11
                      Wait, nevermind. It worked twice now it doing the same thing as before.

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                      • #12
                        I think from what im reading is that you did both options at once and it worked? If so,leave the ACC and 12v plugs and simply plug "Power on" jumper cable back into psu and try boot again. If that works then it was just the ACC and 12v mixed up and you should have your automated start up/shutdown again. If it does not boot, then there's a problem somewhere on psu. So the only other way around it which is the set-up i use.
                        Install an on/off (momentary/toggle) switch on the vehicle's dash or a convenient location and plug it straight into motherboard PWR jumper pins and bypass the psu alltogether. Then get into Windows and change the power button settings to suit hibernation/sleep when you press on/off switch. Also, remove jumper pins on m2 atx so its in normal psu mode as well as the ACC plug(no need for ACC). By doing it this way, it will give you more manual control over pc. E.g. if pc freezes you just hold the on/off button for a few seconds to turn it off and then press again for reboot. Turn the pc on when you want it to so if you just on a breif trip to the shop the pc wont automatically boot up only having to shut down a couple mins later. Hopefully it was just the ACC and 12v and that youve fixed problem. Good luck
                        Last edited by pcmoto.com.au; 10-04-2011, 06:20 AM.

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                        • #13
                          Thanks, I'll give that a try. I'm afraid I fried something because when I was changing the power, I sensed a faint smell of smoke. Hopefully it wasn't my PSU or motherboard.

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                          • #14
                            When I switched the ACC and 12v jumper wires, this is what burned I switched them back and it really smoked and turned bright from the heat. Grr, what gives, the PSU or motherboard?

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                            • #15
                              Very strange. Swapping ACC an 12v cables shouldnt make any difference unless there was a problem with one of them in the first place. If you have removed jumper pin so psu is in normal or dumb mode then make sure you remove ACC cable and just leave 12v and B- cables plugged in. then manually boot with on/off switch at the motherboard not psu( or use wire and bridge both pins on one end of on/off jumper cable for one second). the only other thing i can think of is that the motherboard might be shorting out under it touching metal

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