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Everything wired correctly, Computer turns on for a fraction of a second and then shuts off.

Hello everybody, I've done extensive research on this topic from these boards and around the internet.

My baby:

AMD Vishera 4.7 ghz 8 core Liquid Cooled
Asus Crosshair V formula Z Motherboard
100GB OCZ SSD for OS
1TB HDD
8GB Ripjaw RAM
AMD 290X GPU
Corsair HX1000

Everything in this system HAS worked together, albeit less than 24 hours combined.

Heres the problem:

Ive been putting this computer together for months now, finally got everything installed and working correctly. Once I had everything plugged in, I clicked the power button...got a fraction of a seconds worth of movement from the case fans, then nothing else. The CPU and Motherboard are receiving power, because the LEDs incorporated in both are on. I fiddled with it myself a little bit, couldnt get it to work, so took it to my job and let a computer tech check it out. He diagnosed it as a faulty PSU module (there was a short in there of some kind), unplugged the module, and it worked fine. I took it home Thursday and had very light use Thursday night (mostly installing games/patching) and light use Friday night. CPU temp never went above 40 degrees Celcius.

I wake up Saturday morning to the exact same problem I had been having Wednesday night/Thursday morning, with absolutely nothing changed inside my case, since the sides were still on. Took it to a computer repair shop to check it out, and he diagnosed it as a faulty PSU.

Since then, Ive ordered a new PS (1000 watt Rosewill Lightning) from newegg, and have attempted plugging my old 875w power supply into my system, which last i checked, works. Same problem. Could it be my PSU from my other build doesnt carry enough power per rail to power my new system? or is there some underlying cause behind the PSU?
10 answers Last reply Best Answer
More about wired correctly computer turns fraction shuts
  1. Check all of the wires going into the header connectors of the PSU. Check for loose pins/wires by gently pulling on each individual wire. I think I would be concentrating on the 8pin CPU connector and the 24pin ATX connector for that. It's possible one of the male pins on the motherboard is pushing the female pin loose from the PSU connector
    Try resetting your CMOS with the old 875W PSU in there, see if you get anywhere that way

    Curious, Why so much power?
  2. C12Friedman said:
    Check all of the wires going into the header connectors of the PSU. Check for loose pins/wires by gently pulling on each individual wire. I think I would be concentrating on the 8pin CPU connector and the 24pin ATX connector for that. It's possible one of the male pins on the motherboard is pushing the female pin loose from the PSU connector
    Try resetting your CMOS with the old 875W PSU in there, see if you get anywhere that way

    Curious, Why so much power?



    All of my connections from my PSU seem to be in working order in regards to my CPU/Motherboard. In regards to the amount of power, I plan on adding another AMD 290x into my system once I can finally get it up and running.

    Are these mainly symptoms of a connection wiggling loose? Or could I have caught the old power supply right as it was failing, which caused the initial non-compliance, and then two days later after a "patch" fix, it failed completely?
  3. ryby2012 said:

    All of my connections from my PSU seem to be in working order in regards to my CPU/Motherboard. In regards to the amount of power, I plan on adding another AMD 290x into my system once I can finally get it up and running.

    Are these mainly symptoms of a connection wiggling loose? Or could I have caught the old power supply right as it was failing, which caused the initial non-compliance, and then two days later after a "patch" fix, it failed completely?


    Okay, X-Fire makes sense...

    A loose connection can cause strange things to occur, it's definitely not a good thing in a computer.
    It is possible that the old PSU caused the issue, problematic PSU symptoms can be anything that goes wrong in a computer, often unrelated to power (which can make troubleshooting a PITA)
  4. C12Friedman said:
    ryby2012 said:

    All of my connections from my PSU seem to be in working order in regards to my CPU/Motherboard. In regards to the amount of power, I plan on adding another AMD 290x into my system once I can finally get it up and running.

    Are these mainly symptoms of a connection wiggling loose? Or could I have caught the old power supply right as it was failing, which caused the initial non-compliance, and then two days later after a "patch" fix, it failed completely?


    Okay, X-Fire makes sense...

    A loose connection can cause strange things to occur, it's definitely not a good thing in a computer.
    It is possible that the old PSU caused the issue, problematic PSU symptoms can be anything that goes wrong in a computer, often unrelated to power (which can make troubleshooting a PITA)


    Yes, it has been very much a PITA. Does this seem to be a PSU issue then? If so, I will have to wait til the new one comes on Friday to test it out. Nothing else has changed in the system itself, which is the main reason I'm so confused. It went from not working, to working, to not working with the same symptom, all over the course of 48 hours.
  5. I'm thinking the PSU here. See where you get with the new PSU in there when it comes.
  6. PSU installed, still having the same issue. What else could it possibly be?
  7. I'll suggest breadboarding at this point. Take the motherboard out of the case and (on a non-conductive surface) try running it. You can try the steps in this guide also http://www.tomshardware.com/forum/261145-31-perform-steps-posting-boot-video-problems it can't hurt
  8. Ok. Quick update on this. I was able to unplug every single connector to my motherboard aside from start and reset, and with that, was able to get power. I kept adding new connections in hopes I could find something thst might not be working and causing such strange symptoms, nothing. Just by unplugging ever connector and replugging them in, I was able to get power to the entire system. Just to be clear, every single connector that was plugged in when the tower was not working, is now plugged in with the tower working. Nothing else was changed.

    Not all is well... with this, a new symptom arose. My tower would not recognize my video card, and even though I had power, I was never able to actually get my monitor to display anything.

    Jeez. I reseated the ram. Reseated the gpu, checked connections. No signal whatsoever. After a month of pain and anguish of trying to get this crap working, I'm now in the process of RMAing my board.

    Was this the right route? With all these random, unrelated symptoms, was this a defective board? I still have at least 2 weeks of waiting before I get my mobo back, I'm just curious. Am I moving in the right direction?
  9. Best answer
    It does seem to be the right direction here. Keep us posted, that's just strange (I do have a few theories but can't say for sure what happened there)
  10. Well, all troubleshooting aside. The answer to this question that seems to be rampant all over these boards is a FAULTY MOTHERBOARD. I RMA'd my Crosshair V Formula Z motherboard, ordered an Asus Sabertooth. Installed everything, booted up just fine on the first attempt.

    So, before everybody wastes their time trying to diagnose this problem, direct from Asus RMA center in Jeffersonville, Indiana technician.

    PRODUCT INFORMATION
    SERIAL_NO PRODUCT_TYPE PART_NO PRODUCT_DES MODEL PROBLEM
    xxxxxxxxxx Mother Board 90-MIBJ70-G0AAY0VZ CROSSHAIR V FORMULA-Z 9MIBJ70VZ worked off and on for a few days, tried new parts no go, all parts work in other systems.


    my RMA was honored, and I'll be getting another Crosshair V formula Z Motherboard, which ironically enough is being shipped out the exact same day my Sabertooth Motherboard arrived..... lol :( .

    Thanks for all the help C12Friedman, and I hope this helps everybody else in their computer building process. Don't waste your time, RMA that beast!!
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