Extremley worrying display issue when starting up

[Nicklas]

So, starting up my computer as usual, get the ASUS post sceen, and it goes to Intels RAID config info, and then back to POST screen, then it gets another ASUS screen that indicating "loading" with spinnin dots, after that, the screen flickers and I get this very worrying screen:

Its a line of pixel colors all over the screen

I restarted, same thing happened, did the same again, then it worked fine!?

And same thing today but got a different screen, but it dissapeared and ended up with a black screen before i had time to take a picture on it, it was instead vertical lines of pixels all over the screen

What is this?!
I was thinking it has to do with motherboard since it does it in "around bios startup", or maybe it is windows that has some fatal loading error?


Specs:
Operating System
Windows 10 Pro 64-bit
CPU
Intel Core i7 6700K @ 4.00GHz 54 °C
Skylake 14nm Technology
RAM
16,0GB Dual-Channel
Motherboard
ASUSTeK COMPUTER INC. Z170-A (LGA1151) 46 °C
Graphics
XB271HU (2560x1440@144Hz)
NVIDIA GeForce GTX 980 Ti (ASUStek Computer Inc) 54 °C
Storage
238GB Samsung SSD 850 PRO 256GB (SSD) 38 °C
232GB Samsung SSD 840 Series (SSD) 38 °C
698GB Seagate ST3750528AS (SATA) 33 °C
238GB INTEL SSDPEKKW256G7 (Unknown)
Optical Drives
ELBY CLONEDRIVE SCSI CdRom Device
Audio
Realtek High Definition Audio

 

[das_stig]

Try using the onchip HD530 to rule out the 980 TI.