Z390-E and 9700K will not boot with Nvidia GPU installed (2070 or 1070)

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I'm putting together a new build with the Z390-E motherboard running a i7 9700k CPU. Everything was up and running yesterday using the built in graphics. When I installed a RTX 2070 it would no longer boot. Just a hang up with the GPU LED on and no boot into the bios. After testing all 3 other PCI-E slots, I had the same results. I reverted to the built in graphics and updated the MB bios from the default 0224 (8/14/18) to the latest version available 0506 (9/20/18). Still didn't have any luck getting the 2070 to work.

I took everything apart and returned the MB and 2070 today. I picked up a 2nd Z390-e and a different 2070 card. Rebuilt everything. No issue booting up and updating the bios using the built in Intel graphics. As soon as I installed the new 2070, same exact boot error issue.

I then picked up a brand new 1070 and installed that to see if the issue with related to the 2070. Nope. Same issue.

Huge waste of time and I have no idea what could be going on besides an issue with Asus coming to the market too quickly with this series of motherboards.

I did a quick search and didn't see anyone else reporting issues. Can anyone confirm that they are running the Z390 board with GPU functioning correctly?

Thanks in advance.

[Menthol]

Please list all your specs, case, power supply, I would guess either the Vid card is not seated completely or power supply is multi rail and not supplying enough power, you could try it out of the case on the box the motherboard came in to verify it isn't the case preventing seating of your GPU's

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Please list all your specs, case, power supply, I would guess either the Vid card is not seated completely or power supply is multi rail and not supplying enough power, you could try it out of the case on the box the motherboard came in to verify it isn't the case preventing seating of your GPU's

Build details listed below. The GPU looks seated and it has been removed and reinstalled in all PCI lanes during initial trouble shooting. I would love to avoid the hassle of removing everything from the case considering I already rebuilt this rig twice within the last 24 hours. I wonder if the M.2 drives are causing some type of issue with the primary x16 PCI-e lane I want to use for the GPU?

Motherboard (two tested with same issue): ROG Strix Z390-E
i7-9700k

GPU's tried:
Asus RTX 2070 OC
Gigabyte RTX 2070
EVGA 1070 OC
64GB Gskill DDR 3200

Using both M.2 slots:
M.2 500gb Samsung Evo in slot 1 for Windows 10. 512gb Inland M.2 in slot 2 (bottom)

Case: Antec P100

PS: EVGA 850 G3 SuperNova
Cooling: H100i Pro

[Phillyflyer]

I'm putting together a new build with the Z390-E motherboard running a i7 9700k CPU. Everything was up and running yesterday using the built in graphics. When I installed a RTX 2070 it would no longer boot. Just a hang up with the GPU LED on and no boot into the bios. After testing all 3 other PCI-E slots, I had the same results. I reverted to the built in graphics and updated the MB bios from the default 0224 (8/14/18) to the latest version available 0506 (9/20/18). Still didn't have any luck getting the 2070 to work.

I took everything apart and returned the MB and 2070 today. I picked up a 2nd Z390-e and a different 2070 card. Rebuilt everything. No issue booting up and updating the bios using the built in Intel graphics. As soon as I installed the new 2070, same exact boot error issue.

I then picked up a brand new 1070 and installed that to see if the issue with related to the 2070. Nope. Same issue.

Huge waste of time and I have no idea what could be going on besides an issue with Asus coming to the market too quickly with this series of motherboards.

I did a quick search and didn't see anyone else reporting issues. Can anyone confirm that they are running the Z390 board with GPU functioning correctly?

Thanks in advance.

2 motherboards and 2 different series cards resulting with the same issue ??....not the motherboard nor cards....
Could be what Menthol has stated above or...try setting the card as main graphics within the bios and set @ Gen 3...worth trying as the graphics card should disable the onboard graphics automatically once installed.

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I should also note that when trouble shooting I have attempted a few ways to power the GPU from the 850 G3. I have used two separate feeds to the GPU and also the standard single feed with splitter. With both approaches, the GPU is powered on and looks healthy. LEDs and fans running as normal on all 3 GPUs.

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2 motherboards and 2 different series cards resulting with the same issue ??....not the motherboard nor cards....
Could be what Menthol has stated above or...try setting the card as main graphics within the bios and set @ Gen 3...worth trying as the graphics card should disable the onboard graphics automatically once installed.

With all the variables (two motherboards, etc) and the same issue it could also reveal a bigger issue on the ASUS side since this is a brand new product, no?

I'll take a look at the bios setting you mention now and report back. Thanks.

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Update 1:

After the first few replies, I continued to tinker with the NVIDIA GPU's. I got the 1070 to work briefly. Pulled it out and installed the 2070. Same issue started occurring again. Eventually, I was able to boot with the 2070 installed but nothing plugged into it. Once in Windows (using the Intel graphics) I noticed the device manager showed an unknown PCI card. Very bizarre. I removed and reinstalled again taking note of exactly how the card was sitting and how it slightly shifts as it is bolted into the case. No luck, boot error again. Did this a handful more times before giving up.

Update 2:
Set Secure boot to Windows UEFI mode as suggested by MoKiChU. No luck following that change. I also cannot get the 1070 to boot again either. Something odd is going on here. I have built enough computers to feel confident, but this is starting to be a huge waste of time. *Sigh*

[jpmboy]

is that a fresh install of windows or an installation ported from a different rig/motherboard, or the earlier ram'd motherboard? If yes - do a fresh install. Othewrwise, I agree with phillyflyer (naturally ) two boards and two cards show the same problem, ot is very unlikely it is either card or the board(s). Ram, CPU, PSU are all common between the rigs...

[Phillyflyer]

Timelapse....I'm wondering if the cards are seating properly in the pcie slot since the 1070 got up and running...

[Raja@ASUS]

Take the board out of the chassis, set it up on a non-conductive surface, and then check if the graphics card works correctly.