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Desperate need of help!

Ok so this is my second build and I am losing sleep over it. My first build went really smoothly and this one is having all kinds of problems. So basically my problem is my computer won't boot up when a graphics card is installed i tried two different cards one a old one that i removed from my old system that worked and another one is a new one the Asus R9 280X. What will happen when the card is installed is the red LED indicating a CPU error will light up on my Asus z78 A motherboard and the fans will just spin on the graphics card and heatsink showing that there is power but it won't let you even get to the BIOs. Now if i touch nothing else on the computer and just remove the graphics card the system will start up right away. I have already returned the motherboard thinking that was the problem and it didnt fix it so it shouldn't be the motherboard. Any help or advice at all would be greatly appreciated cause I just wanna get this up and running.

Update: I should also note that my PSU is a OCZ 600 watt modular and the processor is a intel i5 4670k.
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  1. Send me your full specs. Uninstall your previous graphic card drivers. Start on integrated and then install your new Graphic card drivers. And if all else fails try doing a whole clean installing of windows and then installing drivers. Hope this solves your problem. Have you thought of graphic card problem try returning the graphic card too. But try these last two steps as a last resort and if even all this fails take you computer and graphic card to repair shop they might help you.
  2. If the system can't even POST or reach BIOS this has nothing to do with Windows or any drivers.

    Graphics card can also be ruled out as you get the same issue with 2 different cards.


    My hunch is a power issue. The CPU and GPU both draw power from the +12V rail. Maybe this rail is being overloaded once you connect a GPU. Do you have a spare PSU to test with?
  3. He said he tried two graphic cards old one worked he said. PSU maybe the issue. I had the same problem once can't get further the logo turned out it was HDD problem. You might also want to check your HDD.
  4. casper1973 said:
    If the system can't even POST or reach BIOS this has nothing to do with Windows or any drivers.

    Graphics card can also be ruled out as you get the same issue with 2 different cards.


    My hunch is a power issue. The CPU and GPU both draw power from the +12V rail. Maybe this rail is being overloaded once you connect a GPU. Do you have a spare PSU to test with?


    Yeah thats what I was thinking too because your right it shouldn't be a drivers problem because I started with a completely fresh install of windows on a SSD drive that I bought too. I should also note that the first graphics card that I tried in the system was the original one from the first build 4.5 years ago it was a 8800 GTS 512mb card. Don't know it this changes things because I would think the PSU should be able to power that card seeing as how old it is. But I don't know much about PSU so maybe I'm wrong. I wish I had another PSU to test on it but I don't. Maybe the PSU could be taken out and tested to see if its actually giving power?
  5. Try borrowing from your neighbor or test your in it's system only then you can be sure.
  6. goku1234567890 said:
    He said he tried two graphic cards old one worked he said. PSU maybe the issue. I had the same problem once can't get further the logo turned out it was HDD problem. You might also want to check your HDD.


    "old one that i removed from my old system that worked"

    I interpreted that as the old card worked in the old system.

    Can you clarify - did the old card work in your new build?
  7. It's probably (from first glance) your psu being overloaded. I'm one of those people who like to have too much so just to be safe get a 750w. In one of my builds I had this problem,using a 850w with dual SLI so I came to my local computer shop and asked if I could borrow a 1000w power supply, they offered me it for around £15 for the day so I hooked it up and it worked I later got a 1000w psu.
  8. goku1234567890 said:
    He said he tried two graphic cards old one worked he said. PSU maybe the issue. I had the same problem once can't get further the logo turned out it was HDD problem. You might also want to check your HDD.


    goku1234567890 said:
    Try borrowing from your neighbor or test your in it's system only then you can be sure.


    casper1973 said:
    goku1234567890 said:
    He said he tried two graphic cards old one worked he said. PSU maybe the issue. I had the same problem once can't get further the logo turned out it was HDD problem. You might also want to check your HDD.


    "old one that i removed from my old system that worked"

    I interpreted that as the old card worked in the old system.


    Yes thats what it meant. The old one worked fine in the old system but it didnt work in the new one. I should also say that the PSU was bought 2.5 years ago and was working in the old system before I installed the new parts. 600 Watts should be sufficient shouldn't it?
  9. Well what amperes is it providing on 12V maybe your PSU is overloading. Like brend said borrow from the shop for one day and try running it.
  10. brendanbennett said:
    It's probably (from first glance) your psu being overloaded. I'm one of those people who like to have too much so just to be safe get a 750w. In one of my builds I had this problem,using a 850w with dual SLI so I came to my local computer shop and asked if I could borrow a 1000w power supply, they offered me it for around £15 for the day so I hooked it up and it worked I later got a 1000w psu.


    Sorry I hadn't seen your post before the other. My spec's in the system are this:

    MOBO: Asus z78-a
    CPU: intel i54670k
    GPU: Asus R9 280x Direct Cool CUII
    SSD: samsung 120gb
    HDD: 650GB WD
    PSU: OCz modular 600 watts
    OS: windows 7 64bit

    And the first graphics card i tried in the system that didnt work was the 8800 GTS 512mb don't know how much power that one eats up.
  11. Best answer
    600W is right on the limit. Most manufacturers recommend 750W for the 280x but these values are always inflated to accommodate low quality PSU's.

    If it was the PSU it would be down to a fault rather than a simple lack of wattage because 600W should be plenty for your old card. Sometimes faults don't come to light until it get put under some stress.
  12. casper1973 said:
    600W is right on the limit. Most manufacturers recommend 750W for the 280x but these values are always inflated to accommodate low quality PSU's.

    If it was the PSU it would be down to a fault rather than a simple lack of wattage because 600W should be plenty for your old card. Sometimes faults don't come to light until it get put under some stress.


    Ok I'll have to see if I can borrow one from the local computer shop I guess. Its really the only thing I could think would be the problem with it. I appreciate the quick feedback guys. I'll try and update on what happens.
  13. casper1973 said:
    600W is right on the limit. Most manufacturers recommend 750W for the 280x but these values are always inflated to accommodate low quality PSU's.

    If it was the PSU it would be down to a fault rather than a simple lack of wattage because 600W should be plenty for your old card. Sometimes faults don't come to light until it get put under some stress.


    I took it to my local computer shop since i didnt have a spare power supply to test on it and they checked everything out and thought it was the power supply as well. So they plugged a 700W new one up to it and it booted right up. I'm playing games on it now with the new card in it so everything is working fine. Thanks for the help guys.
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