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  1. #1

    Graphics card lights up, pc won't turn on

    I'm in the process of building my desktop. I'm still waiting for my SSD to arrive Monday, but I want to kick on my desktop and make sure the lights/fans work..when I turn on the power supply, two red lights turn on on my graphics card, but nothing else. And yes I'm tried hitting the power button..do I plug something in wrong and do I have a bad MB?

  2. #2
    is your psu connected to the mobo?
    Quote Originally Posted by rogoth View Post
    I'm glad you brought up IQ, the last standardised IQ test I took I scored a 127, the threshold for 'Genius' is 140, and the threshold for 'Gifted Genius' is 165+, based on the fact the global average IQ is 84, and the fact you're likely Americanwhere the national IQ is BELOW the global average and falling consistently which has led to calls for global intervention in your abysmal education system, I feel you have VERY LITTLE room to talk about IQ levels, but thanks for trying.

  3. #3
    Yes, reason I know is cause my graphics card turns on..I do not my PSU going to my card..just the MB

  4. #4
    Old God Vash The Stampede's Avatar
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    What graphics card? Never heard of graphic cards with red diagnostic lights.

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  6. #6
    Try turning the pc on without the gpu plugged in - using onboard graphics.

    Don't mess with any wires inside so it's exactly the same as it was with the gpu plugged in, if it works, either faulty GPU or lack of power i guess.

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  8. #8
    Make sure CPU cables are in correctly + You've correctly connected your case to your mobo. IIf your pressing the power button and nothing is happening at all i'm guessing you haven't plugged in the wires for your case correctly.

  9. #9
    Quote Originally Posted by Miyamoto View Post
    Yes, reason I know is cause my graphics card turns on..I do not my PSU going to my card..just the MB
    a gtx 1080 needs power from the psu directly.. uh.. plug it in?

  10. #10
    Ok thanks, that's what I was thinking but I think I've been looking at it so long..I'm just missing something

    - - - Updated - - -

    Quote Originally Posted by the boar View Post
    a gtx 1080 needs power from the psu directly.. uh.. plug it in?
    I didn't know that, this is my 2nd PC build and it's been a while..since the PSU isnt plugged into the GPU directly, do u think it doesn't have enough juice to turn on the CPU?

  11. #11
    Quote Originally Posted by Miyamoto View Post
    Ok thanks, that's what I was thinking but I think I've been looking at it so long..I'm just missing something

    - - - Updated - - -



    I didn't know that, this is my 2nd PC build and it's been a while..since the PSU isnt plugged into the GPU directly, do u think it doesn't have enough juice to turn on the CPU?
    Can you make a picture of your PC (the inside) so we can see how your cables are setup? If your GTX 1080 isn't powered directly then it is very possible for the system to fail booting yes.

  12. #12
    Bloodsail Admiral Septik's Avatar
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  13. #13
    Quote Originally Posted by Miyamoto View Post
    I'm in the process of building my desktop. I'm still waiting for my SSD to arrive Monday, but I want to kick on my desktop and make sure the lights/fans work..when I turn on the power supply, two red lights turn on on my graphics card, but nothing else. And yes I'm tried hitting the power button..do I plug something in wrong and do I have a bad MB?


    Did you connect the power/reset button cables? And in the right direction?

  14. #14
    You bought about the most power-hungry card Nvidia makes. Are you sure your power supply is capable of handling it and the rest of the hardware in your computer? I have seen this problem many times in people who build their own computer without researching first (or worse, by listening to salespeople in parts stores). If not, that's why your PC isn't turning on; there just isn't enough current to power everything.
    Cheerful lack of self-preservation

  15. #15
    I'll take a picture when I get back home in a couple hours...it's a 650 watt power supply, which should be more than enough to power everything I have.

  16. #16
    Is your CPU receiving power?

    I had the same issue after I hooked everything up, and then the computer wouldn't turn on. In addition to the big plug that plugs into your motherboard, there's another smaller one for the CPU, usually right near it. The CPU needs its own individual power connection, just like the GPU.

  17. #17
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    Quote Originally Posted by Miyamoto View Post
    I'll take a picture when I get back home in a couple hours...it's a 650 watt power supply, which should be more than enough to power everything I have.
    Wattage means only so much when it comes to PSUs. I've ran systems with less watts than was recommend just because I had a quality PSU. Brand and amperage is what actually matters.

    To make sure it has to do with the GPU, completely unplug from the mobo (and unplug any added hardware really. Then make sure the PSU is connected properly to the MOBO and try to turn it on. If it doesn't give any sign of life your mobo is faulty. If it's beeping or shows some inidcator lights, check what they mean.

  18. #18
    The Unstoppable Force Granyala's Avatar
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    Disconnect your 1080 and try to boot your system using the internal GPU of your processor (connect the monitor to the backplate of the Motherboard)

    Should be the easiest way of excluding the 1080.

  19. #19
    Quote Originally Posted by Granyala View Post
    Disconnect your 1080 and try to boot your system using the internal GPU of your processor (connect the monitor to the backplate of the Motherboard)

    Should be the easiest way of excluding the 1080.

    He already did that.


    Quote Originally Posted by TwentyTwelve View Post
    Try turning the pc on without the gpu plugged in - using onboard graphics.

    Don't mess with any wires inside so it's exactly the same as it was with the gpu plugged in, if it works, either faulty GPU or lack of power i guess.
    Quote Originally Posted by Miyamoto View Post
    Didn't work

  20. #20
    Here is a picture of everything plugged in. I took out the GPU & and CPU fan I had on it so u could see the motherboard. It's like the motherboard is not getting power. With the GPU plugged into the motherboard without the PSU plugged directly into it..two red lights were on where u plug the PSU in. After I plugged the PSU directly to the GPU, those lights turned white but nothing else will turn on. I'll get my PC parts and post them in a sec.


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