Having a problem with my setup

[Copyright Inc.]

I'm experiencing an issue where my DP doesn't detect any input, but my HDMI does and on top of that I have no option to enable G-sync. Life is great

Specs:

Monitor: ASUS ROG SWIFT PG279Q
PC:
ASUS ROG STRIX Gaming Z370-E

Intel Core i7-8700K (stock atm)

MSI GeForce GTX 1080ti Gaming X

Corsair Vengenance 3000, 16gb kit

Windows 10 Home, 1803

 

I have tried turning off the computer and unplugging evrything and waiting a few minutes  before plugging in again, still doesn't. I don't know why g-sync isn't working and I can't find anything online. I am using the DP that came with the monitor. Would appreciate any help.

 

EDIT: After the 4th time of unplugging evrything and waiting half an hour it finally let me display through DP. The G-sync problem is also solved. Apparently you can't have G-sync while displaying through HDMI Sorry for having to post, but it was a brand new 2000$+ so i was becoming desperate. Have a nice day.

[PopsicleHustler]

Maybe a stupid question, but have you changed input in the monitor settings from HMDI to DP?

[Jekub]

So, you don't get an image on one of your monitors?

If so, Do you know if the port on the GPU and monitor work? And have you tried a different display port cable?