Is my motherboard dead?

By Rou79 ยท 6 replies
Apr 30, 2015
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  1. Hi guys and gals,

    I've got a issue with my PCs and I can't seem to work out what's going on..


    Old gpu: nvidia gts 8800 6 pin to psu
    (Suddenly stopped working)

    New gpu: Sapphire R9 280 (2 x 6 pins to psu)

    Old psu: silencer 910watt

    New psu: cooler master v650

    Mother board: ASUS: P5N-E SLI

    Ram: 4 x 1gb

    Problem:No display no beeps


    1. Tested a gpu that uses no psu power, pc boots normal, Purchased new card that needs psu power ,same issue pc won't boot.

    2. Purchased new PSU still same issue.

    3.Removed ram and checked 1 by 1 then replaced in different orders and one by one no difference .

    4. Reset cmos battery. No luck.

    5.Disconnected other components one by one hoping for beep.. No luck..

    Question: has the motherboard gone? And if so would it still boot up normal with a non psu based gpu...!?!?

  2. debbiec12323

    debbiec12323 TS Rookie Posts: 17

    I'd think of an issue with the two PSUs that you've tried, since it was working normally with the one that is non PSU based. Check on compatibility issues on those.
  3. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    So why not just use the non PSU based GPU? What version of Windows are you using?
  4. Rou79

    Rou79 TS Rookie Topic Starter

    Tried second psu that is brand new in another pc works fine and lowest needed for new gpu is 500w

    I'm on windows vista

    The gpu is new and don't want to be stuck with a gpu I can't use
  5. Rou79

    Rou79 TS Rookie Topic Starter

    Hmm ok just made a discovered that pc is booting and I can hear the sounds as if windows has loaded and my desktop starts but no display...

    That wouldn't happen if the motherboard was shot right!?

    The PSU iS new so that works...

    The new gpu is compatible with 500watts so 650watts is more than enough..

    Hmm so why no display?

    Monitor works with graphics card that doesn't need psu support..

    But I tried my hdmi linked TV aswell no luck...

  6. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    Yes, I would say that the motherboard is okay. So the graphics card with no need for PSU support still works, producing good PC video?
  7. Rou79

    Rou79 TS Rookie Topic Starter

    Yup with the non psu based graphics card the pic comes on fine as if nothing had happened..

    Also I noticed when I put in the new psu based card it turns on aswell I can hear the windows tune and the desktop loads but no picture... Strange.

    So it is booting as if no errors...

    My monitor works with NON psu based card and TV works via hdmi.

    I tried the TV via the hdmi that didn't work on the new psu based card and neither does the monitor?

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