ASUS ROG strix z390-h motherboard VGA failure

Jan 14, 2019
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I've been putting together my first pc build and decided to go for the 9th generation CPUs from Intel and therefore needed a z390 motherboard. However, I have not once gotten the VGA error to go away after many different attempts

Heres is the specs
CPU
Intel I7-9700k
I thought the current version of BIOS on the motherboard needed to be updated so I have also tried the following CPU
Intel G4900 (Its an 8th Generation CPU listed as supported on the ASUS website)
RAM
I have tried three different ram sticks in each ram location.
All three are listed at supported devices
Corsair Vengeance 2-8x1 RAM sticks and 1 16gb ram stick

I believed that it could potentially be the GPU
I started with a EVGA RTX 1070 TI
then tried the integrated GPU
then I tried an older RTX 760 (which had the same PCI express port)

Then I thought it might be the PSU
I have a EVGA 750W GOLD G3
I tested each connected with a voltmeter and self-tester and can say without a doubt that it is NOT the power supply

Then I thought it might be the Motherboard
As listed above I am using the ASUS ROG Strix z390-h motherboard
I had the motherboard replaced. same issue

then I thought it might be the moniter
so I tried another moniter and hooked the one I've been using to my laptop.
It runs absolutely fine.

Then I thought it might be a bent CPU pin
so I checked each pin with a magnifying glass.

Then I thought it might be the CMOS
so I cleared the battery.

Nothing has worked and I put enough time and money into this that I'm absolutely infuriated with ASUS and despite going through every single possible diagnostic test I can NOT figure out why it simply WILL NOT BOOT or POST or anything.

I have tried two cooling systems- one from MASTER COOLER and one from the G4900 box.

Please if there is anything you might suggest I would love to hear about it.
 
Feb 1, 2019
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Could you please explain how did you solve it? I am in the exact same situation here, z390-h and i5 9600k.
Also passing the CPU and DRAM tests, but the VGA one stays on, no matter if the monitor is connected to the onboard graphics or a MSI 2080 I just bought.