My computer is a HP OMEN.

Specs are at http://store.hp.com/us/en/pdp/omen-laptop---15t-gaming-uhd-1wc88av-1.
Mine with 1TB HD, 128GB SSD drive and NVIDIA® GeForce® GTX 1050.

I plan to have it in dual boot and my partitions are, before install Linux, the following:

SSD SAMSUNG MZVLW128HEGR-000H1
Partition 0
Partition ID Disk #0, Partition #0
File System FAT32
Size 256 MB
Partition 1
Partition ID Disk #0, Partition #1
Disk Letter C:
File System NTFS
Size 59 GB
Partition 2 (to be used by Linux)
Partition ID Disk #0, Partition #2
Disk Letter E:
File System NTFS
Size 980 MB

SATA-III 6.0Gb/s Hitachi HGST HTS721010A9E630
Partition 0 (to be repartioned and 90GB to be used by Linux)
Partition ID Disk #1, Partition #0
Disk Letter D:
File System NTFS
Size 140 GB
Partition 1
Partition ID Disk #1, Partition #1
Disk Letter F:
File System NTFS
Size 13,8 GB

Can supply full system info if needed.

When I boot with the KaOS in Live mode you can see the result in the attached screen captures:

Boot:

After choosing any of the options (in this case was the first one):

Last screen:

Just to mention that it boots flawlessly with Ubuntu and Linux Mint.

If anyone can help I'll appreciate

Do you have secure boot enabled? Looks like it...
Secure boot is not supported in KaOS, you need to disable it in your UEFI-BIOS.

Funny. Other Linux distros never complained. I'll try it.