6GPU Rig - GTX 1070 FE - Windows 10 - Wont see 6th GPU

[Upstager]

I've done just about everything I can think of at this point. I just replaced the Riser with a brand new one and still nothing.
All 5 of my other cards are working fine, but the 6th wont show up anywhere.
I've checked and refreshed the device manager.

MSI Pro Solution Intel Z170A LGA 1151 DDR4 USB 3.1 ATX Motherboard (Z170A SLI Plus) is my MB.

I really need to get this 6th GPU running and would greatly appreciate any troubleshooting advice.

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[Upstager]

So nobody has run into this and has a potential resolution?

This is sad!

[mrwizard209]

Have you checked you are using the correct bios version? 
Is your hard drive formatted in GPT mode?
What are your pci subsystem setting in bios?

[mrwizard209]

https://bitcointalk.org/index.php?topic=1808110.20

This topic here covers pretty much all issues when it comes to a MSI board not seeing a GPU.  It took me 5 seconds of searching to find it.  That is probably why you got no response.  I am just drunk and in a nice mood.

[Upstager]

Well, for anyone that finds this thread in the future, as a last ditch effort I went to Nvidia and downloaded and installed the latest driver...my 6th GPU popped up everywhere and is now running.

[$anounimus$]

Thanks info