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GTX 680 - No Signal/Backlight Flickering

Since today, my computer will boot up, display the Windows 8 logo, then the displays will start messing up. The backlights turn on and off. The displays will constantly switch from having signal to no signal and back. The computer worked fine yesterday, and now the graphics card isn't. Onboard graphics work fine, and I can't access the Nvidia control panel without plugging a display in. Doing so causes the onboard graphics to become gray and the other screen to flicker again. Here are my computer's specs:

Intel Core i7 3770k
Nvidia GeForce GTX 680
16GB DDR3 1333Mhz RAM
480GB OCZ Vertex 3
2x WD 500GB HDD's
Windows 8 OEM
8 answers Last reply Best Answer
More about signal backlight flickering
  1. test that gtx680 on another system this card is defective maybe you will need to rma her.
  2. scout_03 said:
    test that gtx680 on another system this card is defective maybe you will need to rma her.

    Well I can't test it on another computer...
    And anyway, it did work yesterday. I did nothing to it from the time I turned my computer last night to this morning when it started messing up. I might end up RMA'ing it, if I don't get a solution.
  3. Best answer
    you have the win 8 driver for her see if a friend could test her for you and when you put a card in it disable the onboard chipset that the way motherboard work ,do you have a old card you could use for test on the board that wiil help find if the pci-e slot work or maybe your board got another graphic slot you could test the card in and the video cable ?
  4. scout_03 said:
    you have the win 8 driver for her see if a friend could test her for you and when you put a card in it disable the onboard chipset that the way motherboard work ,do you have a old card you could use for test on the board that wiil help find if the pci-e slot work or maybe your board got another graphic slot you could test the card in and the video cable ?

    My computer detects the graphics card at 16x 3.0, so I think I don't need to test the PCIe slots... I will try to put it into another slot nonetheless.
  5. then it could be you video cable not sending the signal to monitor.
  6. scout_03 said:
    then it could be you video cable not sending the signal to monitor.

    I plugged it into the second PCIe 16x slot, it worked perfectly. Put it back in the first, it still worked perfectly.
    I don't know what kind of magic that was, but thank you for reminding me to try simple things before asking for help.
  7. Best answer selected by Hubok.
  8. your welcome maybe she suffer from christmas ghost, happy holidays.
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