Question Can´t install graphic drivers

[camfan]

Hi guys!
My gf just got a new pc and we bought her a used graphic card and PSU(750W) from FB marketplace. I installed the "new" PSU and GC and the system booted with np. After I tried to install the drivers and in the middle of the installation the screen went black and would not turn back on. The GC looks totally normal, fans are working etc. After I uninstalled the drivers, everything was fine again. I tried this method many times with no success. I tried it on my PC and the same thing happenned. I also tried older drivers and nothing worked. I tried to look into the graphics card and I see no problem inside it. Do you guys know what could be the issue? How about reinstalling BIOS in GC?
Thanks in advance.

My gfs specs:
Intel(R) Core(TM) i5-3570 CPU @ 3.40GHz
Ram: 8.0 GB DDR4
MB: PEGATRON CORPORATION 2acf
GC: ASUS R9 390X DirectCU II
PSU: 750W

My specs:
Intel(R) Core(TM) i5-6400 CPU @ 2.70GHz
Ram: 10 GB DDR3
GC: Radeon rx 580 8gb armor oc
MB: GIGABYTE B150-HD3 DDR3 - Intel B150
PSU: 600W

Photo of GC:
https://ctrlv.cz/p0yF

 

[rgd1101]

brand and model of this 750w psu?

 

[camfan]

INTER-TECH COMBAT POWER CP 750W PLUS

 

[DRagor]

Sounds like you bought either fake or just faulty GPU.

 

[SkyNetRising]

Photo of GC:
https://ctrlv.cz/p0yF

Are you running the graphics card without a heatsink? If so, then it's going to die (if not dead already).

Please show screenshot from GPU-Z.