Question GPU not detected in Device manager

[uAurorax]

Hello,
So my GPU gives no signal in monitor. However, Onboard graphics works.
And when I boot into windows using Onboard Graphics I only see Intel 530 in Device manager.
This is really frustrating since I almost tried everything.

I replaced the motherboard. But same problem.

I tried the GPU in a different PC and it works.

I made sure GPU is Primary in BIOS and I disabled Multi Monitor. Also Enabled Legacy.

I replaced RAM, and made sure all RAM work in a different PC.

Updated Windows 10 to latest Updates.
Tried to install gpu driver, but it says GPU not detected.

Tried 3 different Power supplies that are working on different PCs, 2 were Bronze +80 and 1 was Gold +80. All of three were 650 watt.


Note that electricity was cut suddenly a few days ago, so i don’t know since it might be the cause.
And the only thing left to replace is the CPU but i don’t want to buy until i make sure it is the problem, since it boots windows with integrated graphics.

This issue overall is really weird and frustrating, I’d really hope for any possible solution.

PC Specs:

i5 6600 non-k
16gb HyperX 2133 ram (2x8)
650w XFX XXX Edition
RX 590 Red Devil

 

[Lasercode]

When you say "GPU is Primary in BIOS" does that mean you tried to disable the onboard graphics settings in bios? Some bios have a setting to disable the onboard graphics in the CPU and then it would detect the GPU. Try that, if this is not it then I don't know

 

[jay32267]

"Note that electricity was cut suddenly a few days ago, so i don’t know since it might be the cause. "

Did you try the GPU in a different PC BEFORE this happened?

 

[uAurorax]

"Note that electricity was cut suddenly a few days ago, so i don’t know since it might be the cause. "

Did you try the GPU in a different PC BEFORE this happened?

When the electricity was cut there wasn't a gpu, I was using the onboard graphics.
The GPU arrived later. After that I tried the GPU on another PC and it gave a signal on the monitor.

 

[Lasercode]

Do you have any other GPU's to test with? Since there was a electricity cut, the PCI-E slot might have gotten damaged, but then there was nothing in the slot. Just a guess though.

 

[uAurorax]

When you say "GPU is Primary in BIOS" does that mean you tried to disable the onboard graphics settings in bios? Some bios have a setting to disable the onboard graphics in the CPU and then it would detect the GPU. Try that, if this is not it then I don't know

I disabled the onboard graphics from the windows in the Device Manager and then restarted with the monitor connected to the GPU but still no Signal.
I don't think I have an option to disable the onboard graphics
My motherboard is MSI H110m Pro-VD Plus

 

[uAurorax]

Do you have any other GPU's to test with? Since there was a electricity cut, the PCI-E slot might have gotten damaged, but then there was nothing in the slot. Just a guess though.

I tried several GPUs but no signal in all, I changed the motherboard and still have the exact same problem, so I doubt it.