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Thread: System won't boot when powered on, only LED's light up.




  1. #11
    MDDI is offline Junior Member
    Join Date
    Jul 2008
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    Florida USA
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    Default Re: System won't boot when powered on, only LED's light up.

    I agree, test by powering one device at a time just to be sure.

  2. #12

    Default Re: System won't boot when powered on, only LED's light up.

    Make sure you were jumping the correct pins when you tested the PSU, might just be a motherboard issue.

  3. #13

    Default Re: System won't boot when powered on, only LED's light up.

    Well, I took my system to the shop I purchased the parts from last week, and they reckon the Motherboard is cactus. They have to order another one in...

  4. #14
    Join Date
    Jun 2009
    Posts
    9

    Default Re: System won't boot when powered on, only LED's light up.

    Well, we jumped my PSU like MDDI recommended. It didn't kick on. So then we got a working PSU, and hooked it up to just my mobo/cpu/memory. Same deal. We then took out the memory and cpu. Same deal. No beeps. No nothing. So it looks like both my PSU and mobo are DOA, so I RMA'd them both. Thanks for the help guys. I appreciate it. Now I know what's wrong at least.

  5. #15

    Default Re: System won't boot when powered on, only LED's light up.

    Check this post out - a burnt component on the motherboard - same symptom

    [Solved] Yet another Gigabyte MB problem (UD4P)

    Also a youtube vid of the same issue

    YouTube - GA EX58-Extreme boot issue

    We are not alone!

  6. #16
    Join Date
    Apr 2009
    Location
    Virginia
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    1,470

    Default Re: System won't boot when powered on, only LED's light up.

    Hi d fly85 You may want to Test the board outside of the case before you send it off for RMA.
    You could be getting a short from the case. We recommend removing that motherboard from the case/chassis and test the board for POST. Please follow the following simple steps.
    1. Place the motherboard on top of the cardboard box (you can use the motherboard box)
    2. reseat and or install a good CPU, good CPU fan, good Memory, good power supply (plug the 1 X 20 pin and 1 X 4 or 2 X 8 pin from the power supply unit) and a good video card.
    3. Hook the monitor to the video card and be sure the monitor is switched on.
    4. Turn on the system board by using the good case "Power on" switch.
    If the system fails to POST, check the components' insertion again to ensure they are all connected properly.
    Last edited by artdrivers; 06-27-2009 at 11:45 PM.
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  7. #17
    Join Date
    Jun 2009
    Posts
    9

    Default Re: System won't boot when powered on, only LED's light up.

    Got my new Mobo and PSU today. Tested the PSU by jumping it. It's good. But the mobo is still doing the same thing. Any one have any suggestions/thoughts/diagnosis?

  8. #18
    Join Date
    Jun 2009
    Posts
    9

    Default Re: System won't boot when powered on, only LED's light up.

    I found out what the problem with mine was, though it makes no sense to me. I wound up building the thing on a cardboard box, with only the VGU, RAM, and cpu connected. And, to my delight it booted. This lead me to figure it must have been shorting on the case, so I moved some standoff's around, etc. Then, I again tried booting it with only the above parts attached. Again, it booted. So then I plugged in everything else (front panel, usb, fans, etc.) No go. So I tried unplugging things bit by bit. Turns out if the power cord from the PSU the fans are plugged into (I have 4 fans) is attached to any of the sys_fan ports on the mobo, it refused to boot. No clue why, but that was my problem. Now it runs great. I hope this can help someone else.

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