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Dual Graphics Cards Failure

Discussion in 'Hardware' started by beanboy, Jun 29, 2009.

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  1. beanboy

    beanboy Thread Starter

    Joined:
    Jun 29, 2009
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    I have an Asus P5N-E SLI mobo and an 8800GT installed - all works fine.

    I want to run three screens using SoftTH so have to install a second graphics card (not in SLI).

    With the Asus, it has a little daughterboard that needs to be reversed to allow the second PCI-E slot to work for graphics (SLI or Not SLI) - it basically splits the 16x channel into two 8x channels.

    So, with the daughterboard in dual graphics card mode, when I put the second graphics card in the PC refuses to boot. I get a beep code error (1 long 3 short beeps) which indicates a graphics failure. If I remove the second 8800 but leave the daughterboard set for two graphics cards, I get the same problem.

    Switch the daughterboard for single graphics and the single card works fine.

    Only things that I can see that may be wrong is:

    >CPU is mildly overclocked but rock solid - could that be an issue?
    >BIOS stated something about my DDR2 RAM not being 'SLI Ready' - don't have any other RAM to swap out and try.

    Can anyone suggest what I may be doing wrong, or how I can get the PC to boot with a second graphics card installed?

    Thanks!
     
  2. Triple6

    Triple6 Moderator

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    Rob
    Does the new video card work in the first slot with the old card removed?
     
  3. beanboy

    beanboy Thread Starter

    Joined:
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    Hi,

    yep, both cards work fine individually. Just get boot failure when the daughterboard card is in "two graphics card" mode....

    Hope you can help.

    Thx
     
  4. Tanis

    Tanis

    Joined:
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    First Name:
    Shane
    Have you checked Asus for any relevant BIOS updates. There have been BIOS updates on that board to improve compatibility with certain video cards and SLI mode changes.
     
  5. beanboy

    beanboy Thread Starter

    Joined:
    Jun 29, 2009
    Messages:
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    BIOS upgrades are always my final option

    [Had a scare with a BIOS upgrade years ago and never forgot the experience - old PC had intermittent power failures and the manufacturers advice was to upgrade BIOS! Power failed as I was upgrading, luckily it must have just finished as the PC was OK - as expected it made no difference, except to my heart rate and blood pressure!]

    I think I'll try that next though.
     
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