Lutfij :
What have you tried to rule out a faulty PSU/GPU?
Mind sharing your full system's specs like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Can you state what you were doing last with the system prior to loosing display functionality?
Cpu: i5 4460
MOBO: B85M-D2V
Ram: 12 GB DDR 3
HDD: Seagate 1TB
GPU: MSI Radeon R9 280X
PSU: Fsp Hyper 600 watt
Idk what does chassis means.
OS: Windows 10 Pro
At first the computer started to freeze every 15-20 mins,
Then 1 time i turned off the computer by pressing the power button
And when i pressed the power button again to turn on the computer, it turned on but nothing on the screen.
I tried to change the ram slots, tried to power up the computer with 1 stick of ram, tried to reset CMOS and nothing.
But, when i disconnected the cable that connects the gpu to the psu the pc turned on.