It's weird I have 6/7 cards running.  It shows the 7th gpu in device manager but its not installing the driver.  I tried having the system automatically install the driver with no luck.  I manually tried installing the driver to the 7th gpu and i'm getting the error "The required line was not found in the INF".
One by one i'm able to get all the gpu's working except the last one.  Currently I have just the 1 gpu connected to the mobo (via riser) and i'm still getting the "The required line was not found in the INF".

I've attempted to install Nvidia 388.61 and Nvidia 390.77 drivers.

Setup:
7x - MSI 1070 Ti Titanium
Windows 10
4 GB Ram
Mobo:  Asus z270-A
CPU: G4400

Anyone else have this problem?

Yep!  Unless I did it wrong.  Usually I follow the BBT video he made a few months back.  I'm not sure if there are any other additions to his original Video for the mobo.

I use the settings he does in this video.
https://www.youtube.com/watch?v=DR-FkpU2KfI

Hi there,

I've been doing searches and I wasn't able to find any new or old solutions to my problem.
I currently installed 7 MSI Titanium 1070 TI's.  Windows recognizes all 7 gpu's but the 7th gpu keeps showing up as an error 43.  After doing multiple attempts I took off my 7th gpu and booted Windows with 6 gpu's and now the 6th gpu is showing an error.

What i've tried troubleshooting so far:
1.  Swapped Risers - with no change.
2.  Swapping PCIE slots - the error seems to follow the GPU - BUT when I restarted with 6 GPU's the 6th GPU has an error as well so I don't believe the 7th GPU along is the problem.
3.  Swapped Power slots on the PSU (just thought i'd give it a shot)
4.  Disabled the GPU, then Enabled it again multiple attempts.
5.  Re-installed the driver multiple times.
6.  Plugged in HDMI cable directly into the 7th GPU.  The display does work, but I'm still getting the error code and can't mine with the 7th GPU.

I'm still receiving "Windows has stopped this device because it has reported problems. (Code 43)" and under Properties > Events I see "Device PCI\VEN_10DE&DEV_1B82&SUBSYS_C3001462&REV_A1\4&1a5b4e11&0&00E7 requires further installation."


I'm able to mine with 6 cards without an problems.  Also not that I'm unable to load SimpleMining (which I normally use) as it brings up a lot of errors that I'm unable to read since it scrolls so quickly.

Mobo - Asus Z270-A
CPU - G4400
Ram 4GB DDR4
Dual PSU's.

Any advice would be greatly appreciated.  And sorry if someone did have an answer on the forums and I was unable to find it.  I swear I looked for an answer!

^^
I'd like to know about this as well.