4K monitor LG 27UD59-B.AEU NOT working on GTX 770 with Amazon Basics Display Port 1.2 Cable

[pabstacodewabs]

My brand new 4K monitor, model LG 27UD59-B.AEU (https://www.amazon.es/gp/product/B0764DMTPN/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1) does not receive any signal with Amazon Basics Display Port 1.2 3m cable (https://www.amazon.es/gp/product/B01J8S7624/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1). My GPU is a Asus GTX 770 2GB.
All of these components are supposed to be Display Port 1.2 SO I do not understand what is the reason why I cannot get any signal.

PS: I get 4k 60fps signal through HDMI to my 4K Samsung TV. But that same cable I unplug from the TV and plug it to the LG 4K monitor and it does not get 60fps, only 30fps.

I need 4K 60 fps on my monitor (which is capable) or monitor & TV. Please help.

My rig is:
Intel Core i7 2600
Asus GTX 770 2GB
16 GB of DDR3 RAM at 686 MHz
Asus Board P8H67 (LGA1155)
SSD Samsung EVO 840 500GB
HDD Seagate 2TB
Windows 10 Pro

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Thanks in advance.

 

[pabstacodewabs]

It's sorted. The Display Port cable was not doing a proper connection despite the cable was plugged. I realized it had to go further in. I actually had to modify the case.
Right now my GTX 770 is providing dual view in 4K 60fps, with HDMI 2.0 to the 4K SmartTV and with Display Port 1.2 to the 4K Monitor. GTX 770 life has been extended after this.
Regards.