Z170n-Gaming 5 PCI-e slot dead?

[mattyshum]

I have a one month old system that wouldn't turn on yesterday all of a sudden.  After tearing everything down and slowly building back up, at one point it did begin to boot fine, but I have no video now except through the onboard video.
I have tried two different video cards, but neither work.  The fan wont even come on on either one. 

I suspect one of the video cards (the one I had in the computer all along, and EVGA gtx1080) may have died, taking the PCI-e slot out with it.  Can that happen? 

Is there possibly something in the BIOS i can change that may help?  I have reset the bios once already.  I am not sure how to tell if the slot is dead or not, but the other video card I put in, which works fine in my other computer, also doesn't work, and the fan wont even start up on it, so it does seem dead.

[shadowsports]

Two cards, one known to work elsewhere.   Doesn't sound promising, but we can only speculate based the limited info you are able to provide.  BIOS settings..  if there is one that disables on-board video, you can try that, but otherwise, there isn't one that disables an expansion slot.  Sorry 

[mattyshum]

Is there perhaps some software that would be able to monitor voltages to various parts of the motherboard?  Or something like that that could run some diagnostics on the PCI slot?  Since I can boot into windows using the onboard video, if there were something like that it could help.
Thanks for your reply.

[shadowsports]

I think intel makes something that monitors pci/pcie bus speed, but not voltage.  The freebies like mbm only do temps and fan speed.  None others I am aware of