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Thread: Faulty Motherboard

  1. #1
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    Faulty Motherboard

    Not having much luck with recent kit from Scan....first PSU was DOA and now my AsRock A780GM-LE/128M motherboard appears to be faulty

    Installed CPU, RAM and Cooler, HDD and optiocal drive with my Corsair HX620 PSU - fire it up and all fans spin, network port has lights on it, can hear disks spin up but no video. Tried both DVI and D-sub and no video from either. Tried different cable, different monitor no joy.

    I guess the on-board graphics are defective unless I'm missing something?

  2. #2
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    • kmac's system
      • Motherboard:
      • Gigabyte GA-P55-US3L
      • CPU:
      • Intel Core i5 750
      • Memory:
      • 2GB Corsair DDR3
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    Re: Faulty Motherboard

    Anyone know if the onboard VGA only works with certain CPUs?I'm running an AMD triple core.

  3. #3
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    • kmac's system
      • Motherboard:
      • Gigabyte GA-P55-US3L
      • CPU:
      • Intel Core i5 750
      • Memory:
      • 2GB Corsair DDR3
      • Storage:
      • 2 Samsung F3 500GB each
      • Graphics card(s):
      • ATI HD4770
      • PSU:
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    Re: Faulty Motherboard

    Okay tried my ATI 4770 PCI-E card and no joy either. Card works fine in my other machine.

    Any chance this could be a RAM issue?

    Edit: Damn RAM not compatible with the motherboard.

    This is the RAM I got:
    http://www.scan.co.uk/product.aspx?ProductId=29888
    On the chip say CM2X2048-8500C5C

    This is what they say will work:
    http://www.asrock.com/mb/memory/A780GM-LE128M.pdf
    Closest is CM2X2048-8500C5D

    Now need to decide whether to get new mobo or new RAM!!! Mobo seems cheaper as I have 2X2GB of the RAM already
    Last edited by kmac; 21-02-2010 at 12:41 PM.

  4. #4
    Efficiency freak Queelis's Avatar
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    Re: Faulty Motherboard

    That may mean that they haven't tested the RAM, and not that it won't work with your mobo. Have you tried leaving only one stick of RAM in (either one)?

    And do you not get video at all, or can you go into BIOS?

  5. Received thanks from:

    kmac (21-02-2010)

  6. #5
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    • kmac's system
      • Motherboard:
      • Gigabyte GA-P55-US3L
      • CPU:
      • Intel Core i5 750
      • Memory:
      • 2GB Corsair DDR3
      • Storage:
      • 2 Samsung F3 500GB each
      • Graphics card(s):
      • ATI HD4770
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      • Enermax Modu 82+ 525W
      • Case:
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      • Operating System:
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    Re: Faulty Motherboard

    Hi - I have two 2Gb memmory modules and I tested each one individually in each RAM slot

    No VGA out put at all so can't even get into the BIOS
    Tried a PCI-E ATI4770 card and no VGA at all
    Very frustrating
    Fans and disks all spin up okay

  7. #6
    Bows out! CAT-THE-FIFTH's Avatar
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    Re: Faulty Motherboard

    It could be that the BIOS needs to be updated on the motherboard.


    Those despicable Elk,stealing the pond weed!

  8. #7
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    • kmac's system
      • Motherboard:
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      • CPU:
      • Intel Core i5 750
      • Memory:
      • 2GB Corsair DDR3
      • Storage:
      • 2 Samsung F3 500GB each
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      • ATI HD4770
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    Re: Faulty Motherboard

    Possibly but its a catch 22 - I need some RAM that will work before I can update the BIOS so that the RAM I have may work.

    Actually I'm not sure a BIOS update will fix it. I finally realised the issue after careful perusal of the Motherboard manual and it states that only certain 1066Mhz DDR2 RAm will work and to check the AsRock website for compatible RAM. So they know they only support some 1066RAM.

    I guess the easiest thing would be to get some 800Mhz RAM. The other annoying thing is that I have to remove the cooler to change the RAM as it (Xigmatech S1283) overhangs the RAM slots with only millimetres between RAM and cooler

  9. #8
    Senior Member Pob255's Avatar
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    Re: Faulty Motherboard

    Try plugging a pc speaker and see if you're getting a bleep code on power on.

  10. #9
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    • kmac's system
      • Motherboard:
      • Gigabyte GA-P55-US3L
      • CPU:
      • Intel Core i5 750
      • Memory:
      • 2GB Corsair DDR3
      • Storage:
      • 2 Samsung F3 500GB each
      • Graphics card(s):
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      • PSU:
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      • Operating System:
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    Re: Faulty Motherboard

    Its got a little speaker that came with the case plugged in. Not a beep out of that though. That's what unnerved me a bit. The manual also has no mention of beep codes and what they mean.

  11. #10
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    Re: Faulty Motherboard

    No beep at all in my experience can mean a dodgy CPU unless the speaker is faulty.

    You would expect to get beeps for faulty RAM, graphics problem etc though but if the CPU is dead there would not be any beeps.

    HTH.
    E6850@ 3700MHz / 6GB DDR2 / 500GB SATAII / nVidia 7800 GTX / Lian Li Plus7B

  12. #11
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    • kmac's system
      • Motherboard:
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      • CPU:
      • Intel Core i5 750
      • Memory:
      • 2GB Corsair DDR3
      • Storage:
      • 2 Samsung F3 500GB each
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    Re: Faulty Motherboard

    Oh dear - just ordered some more RAM as its been more than seven days since I got the first lot of RAM in Scan woudn't take the old RAM back

    I hope its not the CPU though - don't you need the CPU to work to get all the mobo connected fans to work?

    I will change the speaker when I get home and check. If its the CPU then I can always send the RAM I ordered today back I guess

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    Re: Faulty Motherboard

    The fans will spin up even without a CPU present.

    A CPU in working order is required to get the POST screen up. Same as RAM.
    E6850@ 3700MHz / 6GB DDR2 / 500GB SATAII / nVidia 7800 GTX / Lian Li Plus7B

  14. #13
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    • kmac's system
      • Motherboard:
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      • CPU:
      • Intel Core i5 750
      • Memory:
      • 2GB Corsair DDR3
      • Storage:
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      • Operating System:
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    Re: Faulty Motherboard

    Hmm. Okay will eliminate RAM tomorrow evening and then RMA the CPU.

  15. #14
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      • Memory:
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    Re: Faulty Motherboard

    I seem to remember a thing about motherboards with onboard graphics from way back, the Pentium 3 days and before so it might not even be the case now and probably isn't but have you tried just one stick of RAM in the closest DIMM slot to the CPU as years ago RAM was required in the slot nearest the CPU in order to get a POST screen, for some reason.
    E6850@ 3700MHz / 6GB DDR2 / 500GB SATAII / nVidia 7800 GTX / Lian Li Plus7B

  16. #15
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    • kmac's system
      • Motherboard:
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      • CPU:
      • Intel Core i5 750
      • Memory:
      • 2GB Corsair DDR3
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    Re: Faulty Motherboard

    I have two sticks of RAM, and two RAM slots - I tried all Six combinations, Each stick on its own in each slot and the two sticks together

  17. #16
    jim
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    Re: Faulty Motherboard

    Would recommend RMA'ing everything you've bought from Scan back together in a job lot if they'll let you do it.

    Leaves you less open to being mucked around with not found faulty fees in my experience.

  18. Received thanks from:

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