Hi, Ok lets do some basic troubleshooting
Update Bios
First I would like you to update your motherboard bios if you have not already. Assuming you are on Windows 10 64bit this is the latest one
http://dlcdnet.asus.com/pub/ASUS/mb/LGA1151/Z170-A/Z170-A-ASUS-3301.zip?_ga=1.32640441.620729996.1486724269
if Not find it here https://www.asus.com/Motherboards/Z170-A/HelpDesk_Download/
Unzip the .CAP file and place it into a USB Flash Drive.
Eject and unplug all other Flash drives
Reboot the PC into the bios (using the iGPU ofc)
go to the tools section the UEFI bios
select Asus EZ flash 3 or w/e number you have
select by USB
Select the Flash drive that has the bios within
Select the .CAP file
Press Enter
When the update is done it should automatically reboot, give you an option to reboot, otherwise you umm.... reboot lol :lol:.
did not work?
I need you to clarify a couple things.
First are you using the power supply cord for the GPU that looks like this?
or like this
Your card has an 8 pin power connector but you should be using the one in the first image 6+2 connector.
Are you booting with the Display connected to the GPU? Or to the motherboard i/o (the ports directly attached to your motherboard)?
After you plug in your 1060 to the PSU can you get the system to boot while leaving the display connected to the motherboard i/o (using the iGPU).?
For the sake of speeding things along
If you can get it to boot using the iGPU (having your display plugged into the motherboard) with the GPU connected to the PSU using the 6+2 connecter while located in the PCIEx16_1 slot would be slot #2 in the image below on your motherboard.
Then please do the following:
Reset all your BIOS settings to default. (boot to bios click the top right "hotkeys" find the one that says reset to optimal setting or w/e. Press it... DUH :lol: (usually F5))
Have access to a second monitor? (ask your friend)
- Do not plug a display into the 1060 yet
Boot to bios
Go to the Advanced tab
Select Advanced System Agent
set iGPU Multi monitor [Enabled] (leave the memory at 64MB)
set Primary Display to [iGFX]
press F10 (it could be different for you, basically exit saving changes, check hotkeys on the top right corner if unsure)
Do not plug a display into the 1060 yet
Allow it to boot to login.
Shut it down.
Plug in the second display to the GPU.
Boot up the PC
If you do not see an image on the second screen yet do not worry
login to windows
assuming you are using windows 10 press Win+P (start menu/windows logo key +P)Either click duplicate. or keep holding down the win key and press p again until you have selected duplicate and press enter. (t DO NOT select 2nd screen only).
if you see a picture on the second display (the one connected to the GTX 1060) then reboot to bios
Go to the Advanced tab
Select Advanced System Agent
set Primary Display to [PEG]
Press F10 (or w/e key is = Exit saving changes)
Does the 2nd monitor (the one connected to the GTX1060 display the bootup sequence (the asus logo or w/e you see during boot and the option to bios etc) ?
If it does congrats your motherboard isnt borked. 
Shutdown
unplug your friends display say thanks blah blah blah
plug only 1 display, your display to the GTX 1060
Attempt to boot
If you see all the bios and stuff and everything is working fine then login to windows
press win+P select primary display only or PC screen only. Select me as best response 
yay. Then Do w/e you wanna do XD
optional want to disable the iGPU? (since you have a K series i7 this can help Overclocking thermals)
reboot to bios
Go to the Advanced tab
Select Advanced System Agent
set iGPU Multi monitor [Disabled]
set Primary Display to [PEG]
F10 (exit saving changes)
Enjoy
Do not have access to a second monitor? (NOT RECOMMENDED)
- Plug in your display to the motherboard i/o
Select Advanced System Agent
set iGPU Multi monitor [Enabled] (leave the memory at 64MB)
set Primary Display to [iGFX]
F10 (exit saving Changes)
Login to windows
assuming you are using windows 10 press Win+P (start menu/windows logo key +P) and click duplicate. or keep holding down the win key and press p again until you have selected duplicate and press enter. (t DO NOT select 2nd screen only).
Shutdown
Plug in the display to the GTX1060
Boot up the PC
You will likely NOT see the boot up sequence don't worry, leave it alone for about 1-5 minutes or w/e it normally takes to get to the login screen.
Do you see the login screen?
If not press win+P+P+P+P and press enter. do you see a display? if not press win+p+p+p and press enter do you now see a display?
If not scroll down to where it says Didn't see S#@%!
If yes, reboot to bios
Go to the Advanced tab
Select Advanced System Agent
Optional want to disable the iGPU? (since you have a K series i7 this can help with Overclocking thermals) set iGPU Multi Montor [Disabled]
set Primary Display to [PEG]
F10 (exit saving Changes)
If you see all the bios and stuff and everything is working fine then login to windows press win+P select primary display only or PC screen only. Select me as best response yay. Then Do w/e you wanna do XD
Didnt See S#@%! ?
- Reboot to bios
Go to the Advanced tab
Select Advanced System Agent
set iGPU Multi monitor [Disabled] (leave the memory at 64MB)
set Primary Display to [PEG]
F10 (exit saving Changes) When it shuts down unplug the display before it reboots.
Hardboot the PC (hold the power button until it shuts downs)
plug in the display to the GTX1060
Power on the PC
If it boots correctly Select me as best response yay. Then Do w/e you wanna do XD
optional want to enable the iGPU? I had you disable. (since you have a K series CPU I recommend leaving it disabled as it may help with Overclocking thermals)
Reboot to bios
Go to the Advanced tab
Select Advanced System Agent
set iGPU Multi monitor [Enabled] (leave the memory at 64MB)
Set Primary Display [PEG]
F10 (exit saving changes)
If it still doesnt !@$#5#$^ Boot up properly 
Turn off the PC and plug in the display back into the motherboard i/o and attempt to boot.
If it now no longer shows a proper boot sequence
you'll have to clear the CMOS.
Turn off the PC. Switch off the PSU. Unplug the Power cord. Then remove the button cell battery located below your CPU, wait 30 seconds. Re-insert the battery. Plug in the PC, Switch on the PSU. Turn on the PC and make sure it boots properly again.
didn't work?
please follow the instructions from your motherboard manual on how to clear the CMOS the annoying way lel . Included below.
If none of that worked. Then RMA your motherboard
or plug in a USB flash drive to your PC boot to bios and click the top right "hotkeys" find the screenshot option (usually f12) Screenshot all your bios settings and select the Flash drive as the save location. Then upload them somewhere. like lunapic or tiny pic. Then add them here. Although it is likely that the screens will prove a waste of time and you'll have to RMA anyway.
Good luck
P.S. If you have a good air/water cooler and want help overclocking the CPU, start another Q/A and PM the link I'll help you out.
Facebook
Twitter
Instagram