gigabyte ex58 ud5 motherboard not booting

Posted on 2009-04-21
Last Modified: 2013-11-09
Hi All,

My system has been running fine for about 6 months and then this morning it will not boot. The lights go on, the fans run but there is no bios beep and nothing on the screen.

i have done some searches which recommend to update the bios but i cant until i get the machine to boot.

i have tried different memory module configurations with no luck.

i tired flashing the cmos with no luck.

Any help would be greatly appreciated!


the system specs are:
- Apacer Internal Card Reader AE101 Black Only OEM, support SDHC card
-Corsair CMPSU-620HX 620W ATX Power Supply, 120mm fan, Dual PCI-E Graphics Card Connector, 8 SATA Connectors, Universal AC input 90~264V
- Corsair TR3X6G1333C9 6GB (3x XMS3 2GB) PC-10600 (1333MHz) XMP DDR3 RAM, 32x240-pin DIMMs, Triple Kit, Non ECC Unbuffered, 9-9-9-24
- Gigabyte GA-EX58-UD5 MB, Intel X58+ICH10R, QPI 6.4GT/s, DDR3 2000, PCI-Ex16, SATAII, RAID, IDE, 2xGbE LAN, 8ch audio, 2oc PCB,USB2, Heatpipe
- 2x Gigabyte GF9800GT Overclocked PCI-E 1GB, 256 Bit DDR3,700/1800MHz, 2x Dual DVI, HDTV, Max Res. 2560x1600, Fan
- Intel Core i7 920 (2.66Ghz/ 8MB/ 4.8GT QPI/ Quad Core)

Question by:techrelief
    LVL 26

    Expert Comment

    First reset CMOS and see if that gets any life out of it.

    Next strip to bare essentials system and see if you can get to the BIOS screen.
    Just min RAM, video, keyboard.
    All drives should be disconnected [power and data], all add-in cards removed [except video if you don't have on-board], and all USB devices disconnected [except keyboard if applicable], speakers disconnected.
    - If you can get to the BIOS screen then something you took out was bad.
    - If you can't then it's Mobo, CPU, RAM, or PSU and so need to figure out which of those.
    LVL 91

    Expert Comment

    sorry if i repeat some,
    the fans running indicate 12 V present - no bios beep means nothing running
    Here my troubleshooting procedure :
    clean the system from dust, then  test with the minimum setup - disconnect also all peripherals and network cables :
    motherboard + cpu + 1 ram stick, video card, power supply
    verify that the 4-pin cpu Aux power plug is connected
    on boot, do you have a display?
    if NO it is one of the connected, swap ram, Power supply, video card or monitor - leaving only motherboard and cpu
    if Yes, add devices till the problem shows

    you can also check the motherboard for bad capacitors as shown here :

    Accepted Solution

    thanks for your replies guys but i decided to return the motherboard for warranty.

    the gigabyte support said other MB owners experienced similar problems.

    I will let you know how that process goes. My supplier said it shouldnt take longer than a week or 2

    thanks again

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