Question Monitor goes black and says no signal

[SalatOst]

So I booted my PC yesterday. It boots and so on, then come the login screen i press enter and the monitors(i have two) goes black and says no signal. It does It at that moment everytime i try to boot the PC. Only when It boots in secure boot i can get access to my desktop.

I thing it might have something to do with the graphics card. As i booted the PC without the card and it ran fine. The fans of the card runs and it does not get hot.

I have also tried to reinstal the whole operating system, did not help either.

Specs:
NVIDIA® GeForce GTX™ 980 Ti
HyperX Savage DDR3 2400MHz (4 x 8 GB)
MSI Z97 Gaming 5
Intel® Core™ i7-4790K CPU 4.00GHz
Samsung 950 PRO 512GB PCIe® NVMe™ M.2 SSD
Corsair RM750, 750 Watt 80 Plus®

 

[rgd1101]

full system spec? include brand and model of the psu

 

[SalatOst]

full system spec? include brand and model of the psu

I have updated the post with specs

 

[dotas1]

Have you tried the GPU in another system? Another GPU in yours?

Only when It boots in secure boot i can get access to my desktop.

Was that with or without the GPU in the system?

 

[SalatOst]

Have you tried the GPU in another system? Another GPU in yours?

Was that with or without the GPU in the system?

No i havn't the chance yet

I can boot in secure mode with both the GPU in and out of the system. And if i boot without the GPU and uses the internal GPU in my motherboard i can boot normally