Motherboard won't start, only lights up

  Buffy12 21:40 08 Dec 2018

Hi People,

In the last months, I have been building this ultra Video-editing and gaming PC with the following specs:


Gigabyte X299 AORUS Gaming 7 Intel Socket 2066


11GB nVidia GEFORCE GTX 1080 Ti - still on the way


512GB WD Black M.2 NVMe PCIe SSD

32 GB Intel Optane Memory



CORSAIR 1200W HX Series Modular 80 Plus Platinium

Corsair H1155i PRO Cooler w/ PCS Liquid Series Ultra Quiet Fans ASUS STRIX Raid DLX 7.1 PCIe

ASUS PCE-AC88 AC3100 2100Mbps/5 GHz

I am still waiting for the video card, but since I knew it's going to take ages to put everything together, I decided to install everything I've got except the video card thinking I can install it at a later point.

So, I've put all the parts mentioned above together, as described in the manuals and as guided by tutorials on the internet. But when I wanted to test if it turns on, something very odd happened. When I turn the PSU on, the LEDs on the motherboard lights up for a second and nothing else happens. Also when I press the main power button, a very bizarre squeaky sound comes from the CPU as you can see in the following video:

click here

Did any of you encounter this before? Or at least do you have any idea what it can be???

Also, I took a few photos of the motherboard and CPU install I've done. Help, please??

click here

  Jollyjohn 11:17 09 Dec 2018

I suspect power, or lack of it. Having looked at the manual I see there is the main 24 pin power connector and two 8 pin connectors at the top of the motherboard, are they correctly connected??

Do you get any beeps, assuming a speaker is connected, beep codes will help trace the problem.

  Buffy12 20:49 09 Dec 2018

Hi Jollyjohn,

I have connected a speaker as you suggested, but no beep is coming out of the motherboard. Also, I have made sure several times that the 24 Pins cable and the CPU cable are correctly connected. I have also tried the both CPU 8pins cable slots and in both instances, nothing happens. I know it might sound stupid, but I don't have to connect both 8 pin connectors, right? Thanks

  Jollyjohn 21:42 09 Dec 2018

The two 8 pin connectors may, or may not be connected, depending on your graphics card and it's power needs. I have a single 8 pin connector but with a 4 pin plug in it because that is all I need. You should at least get a single beep - POST completed successfully??

  Buffy12 21:46 09 Dec 2018

No, nothing I'm afraid. I tried all the possible combinations. I'm going to take it to a repair shop tomorrow to get it checked. Hopefully is just a misplaced connector. However, all the parts are under warranty anyway, so once I found the issue, I can just get it replaced. Thanks for your help. I'll keep you posted.

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