Issue getting third monitor to work.

[Dak110]

I just upgraded my PC from an old Asus z170k MB to a Gigabyte z370 Aurous Gaming 5 MB and CPU from an i7 6700k to an i7 8700k. Before the upgrade i had three monitors working just fine with my setup simply by enabling the on-board graphics or whatnot in the BIOS, however after installing the equipment i had to re-enable that and now the monitor does not seem to want to be detected at all. Two of my screen are running through my GPU which is a 980 TI One is through the HDMI and my main monitor is through DVI. The rest of the the display outputs on the gpu are display ports which i dont have the cable to connect to, so i use an HDMI cable to connect to the MB. If there is anything i can do to try and make my third monitor work again im all ears.

 

[Shektron]

Why don't you just use a DisplayPort to HDMI adapter and call it a day?

https://www.amazon.com/DisplayPort-Adapter-Benfei-Converter-Gold-Plated/dp/B017Q8ZVWK/ref=sr_1_1_sspa?s=electronics&ie=UTF8&qid=1530767451&sr=1-1-spons&keywords=displayport+to+hdmi&psc=1

 

[InvalidError]

If the IGP is forced to enabled in BIOS, the IGP drivers are installed and enabled in the OS, and the display output on the secondary adapter/IGP is also enabled, it should work.