Question No Video Output from GTX1070 in New Build

[HardcoreRobot]

Brand new build... could not get it to post or show any video output. Last thing I checked was the GPU since I had just pulled it from a working system (all other parts were new so I was thinking somethign might be DOA). But, when I put in an old GTX660, posted and got into BIOS right away. So I thought maybe I broke the 1070 when I swapped it, but when I put it back in the old machine, it works right away too. Things I've tried:
*Resetting CMOS
*Reseating card
*Cabling to PSU
*HDMI/Display Port to 2 different monitors

Not getting any beeps, but I think I need to install a speaker (will do that tomorrow).

Heres the full part list... really don't know what else to try. At least getting into the BIOS with the 660 let me know that the rest of the parts are working as expected.

PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 5 2600X 3.6 GHz 6-Core Processor ($199.99 @ Amazon)
Motherboard: ASRock - B450 GAMING-ITX/AC Mini ITX AM4 Motherboard ($118.98 @ Newegg)
Memory: Team - NIGHT HAWK 32 GB (2 x 16 GB) DDR4-3200 Memory ($249.99 @ Newegg)
Storage: Samsung - 970 Evo 1 TB M.2-2280 Solid State Drive ($249.90 @ Amazon)
Video Card: Zotac - GeForce GTX 1070 8 GB Video Card
Case: Phanteks - ENTHOO EVOLV SHIFT Mini ITX Tower Case ($115.98 @ Newegg)
Power Supply: Corsair - SF 450 W 80+ Gold Certified Fully-Modular SFX Power Supply ($85.53 @ Amazon)

Any help greatly appreciated!

 

[LTC8K6]

I would guess the PS is too weak.

 

[HardcoreRobot]

Hey, thanks for the reply. That crossed my mind as well, but when I looked at the power requirements for the 660 they seemed very similar so I discounted it. Just to be sure, I just now hooked everything (mobo/cpu/gpu) up to an external 860W PSU and I'm seeing the same behavior.

 

[Ketchup]

With the video card in place, boot the pc with video output cable connected to INTEGRATED VIDEO on the board (not your card). Go into the BIOS and select PEG (or whatever they call discreet video). Save settings and ser if it outputs from your card.

 

[HardcoreRobot]

Not an option, no onboard video! I can poke around the bios some more, but I don't expect to see any options since its not there. Plus the 660 works as expected without any BIOS adjustments.

 

[Ketchup]

Not an option, no onboard video! I can poke around the bios some more, but I don't expect to see any options since its not there. Plus the 660 works as expected without any BIOS adjustments.

Gotcha. What BIOS are you running now on that board?

 

[HardcoreRobot]

Gotcha. What BIOS are you running now on that board?

It shipped with 1.3, and there is an update available according to their support site - https://www.asrock.com/MB/AMD/Fatal1ty B450 Gaming-ITXac/index.asp#BIOS

That is on my list of things to try now, though I'm not too optimistic since it appears that the update wouldnt really affect me. But, worth a shot.

 

[HardcoreRobot]

Speaker installed, no beeps (removed GPU entirely and got 5 beeps, so i know the speaker is good).

Flashed BIOS to latest. Still no signal on the 1070, 660 working fine. Im running out of hair to pull out...

 

[Ketchup]

Hmm... just to make sure we are on the same page, you have run a CMOS reset with the 1070 in the Asrock board?

 

[VirtualLarry]

Flashed BIOS to latest. Still no signal on the 1070, 660 working fine. Im running out of hair to pull out...

Does this motherboard support UEFI or Secure Boot? Maybe the 1070 has a UEFI GOP, and the 660 doesn't, so the 660 boots using CSM, but the 1070 defaults to UEFI booting, and it fails Secure Boot for some reason, so it doesn't activate the GPU.

Try forcing CSM mode / disable UEFI booting (may cause OS issues, if you installed UEFI, which is likely), or alternatively, disable Secure Boot. (It may require removing the Platform Keys, if the BIOS/UEFI doesn't provide for an easy toggle to disable Secure Boot.)


Also, consider updating the firmware on the GPU.

https://www.nvidia.com/object/nv-uefi-update-x64.html

 

[HardcoreRobot]

Does this motherboard support UEFI or Secure Boot? Maybe the 1070 has a UEFI GOP, and the 660 doesn't, so the 660 boots using CSM, but the 1070 defaults to UEFI booting, and it fails Secure Boot for some reason, so it doesn't activate the GPU.

Try forcing CSM mode / disable UEFI booting (may cause OS issues, if you installed UEFI, which is likely), or alternatively, disable Secure Boot. (It may require removing the Platform Keys, if the BIOS/UEFI doesn't provide for an easy toggle to disable Secure Boot.)


Also, consider updating the firmware on the GPU.

https://www.nvidia.com/object/nv-uefi-update-x64.html

Thank your for those tips! I never even realized the GPU could get fw updates. I'll need to read up on your other recommendations. BUT, I may have had a breakthrough... This particular case provides an adapter/riser cable that wraps around the back of the case so that the GPU can be mounted vertically into a bracke in the back. In order to eliminate the ribbon cable or bracket as a problem, I pulled the mobo out of the case and plugged the 1070 directly into the mobo. It brought me to the BIOS! Heres a picture of some building gore for your amusement - https://photos.app.goo.gl/Lf5FjLL7Q4Rerz4z8

I'm going to thoroughly inspect the cable and if everything looks good, I'll reach out to Phanteks to see what they have to say. Working through problems is part of the fun of building but it gets frustrating when you feel like you are out of things to try, so I do appreciate everyone's input.

 

[VirtualLarry]

In order to eliminate the ribbon cable or bracket as a problem, I pulled the mobo out of the case and plugged the 1070 directly into the mobo. It brought me to the BIOS!

That's progress then, and indicates strongly to me that the riser cable may be at fault. Honestly, PCI-E x16 riser cables/boards are a bit iffy, IMHO. I mean, they work, most of the time. But when they don't, they're quite annoying.

Here's a thought, if the 1070 doesn't work with the riser cable, but the 660 does... isn't the 660 PCI-E 2.0/2.1? And not 3.0? But the 1070 is 3.0. Maybe, the mobo is trying to run the 1070 at PCI-E 3.0, and noise/interference/issues with the riser are causing problems?

See if there's an advanced option setting to crank the PCI-E data rate of the primary x16 slot down from 3.0 to 2.1/2.0 data rates. Some boards have that setting.

This is often done on boards designed to be used as mining rigs. Also, the setting could be called "mining mode" (enable/disable). If so, enabling "mining mode", would drop PCI-E link speeds.

 

[HardcoreRobot]

I did find two options in the BIOSCIe x16 Switch and Promontory PCIe x16 Switch, and both have options of Auto, Gen1, Gen2. Looking around the only people I saw talking about it were miners, so I think that might be the option in this BIOS. I didn't see any other PCI-E or GPU related settings. I tried all combinations of those settings to no avail. Email out to Phanteks...

 

[HardcoreRobot]

Got my replacement riser today... same problem. The 1070 works in other machines, and directly in the new mobo, but not either riser. Im just sending the case back and finding one without a riser.