I'd suggest taking your pc to somebody, who can properly diagnose it.
If you're replacing parts based just on your gut-feeling, then you might be replacing the wrong one.
It might also be faulty psu, dead graphics card and more.
I think i got my gpu fried and it doesnt display any in monitor. Some dude told me that it may be in the socket or the main gpu. Im just planning on buying new motherboard
I'd suggest taking your pc to somebody, who can properly diagnose it.
If you're replacing parts based just on your gut-feeling, then you might be replacing the wrong one.
It might also be faulty psu, dead graphics card and more.