Question Help with PC Issue After Using DisplayPort

[alecambo]

Hey guys,
I need some assistance with a computer problem I've encountered recently. Here are the specs of my system:

• Motherboard: Z87K
• CPU: Intel Core i5-4670K
• RAM: 16GB
• PSU: 600W
• Graphics Card: RX580 8GB 2048SP

The problem started when I decided to use the DisplayPort on my graphics card for the first time. Previously, I had been using HDMI, and everything worked fine. I connected my computer to my TV via a DisplayPort to HDMI adapter.
Here's what happened:

1. The computer briefly turned on.
2. I saw a signal on the display (it was displaying for some seconds).
3. Then, it turned off.

When I attempted to turn it back on, the PC seems to start for about half a second and won't boot. I've tried the usual troubleshooting steps like removing the CMOS battery, reseating the RAM, connecting the GPU to another PCIE slot, checking all connections, and plugging/unplugging everything. Strangely, the computer only works when I remove the GPU entirely.
I can see the GPU fans start to move for that half-second when I try to power on the PC, but it won't boot. I even opened up the GPU, but it doesn't seem damaged, and there's no burnt smell.
When I press the power button, with the GPU connected, the PC initiates this half-second boot sequence. Nevertheless, it only does so on the initial attempt following the reconnection of power. Subsequent presses of the power button do not result in any action; it requires unplugging and plugging it back in for the PC to attempt to boot again.
For now, I'm using my computer without the GPU because I need it for work, but I was wondering if my GPU is dead or what might be causing this issue? Your help would be greatly appreciated!

 

[Lutfij]

PSU: 600W
600W is the advertised wattage of the unit. What is the make and model of the PSU in your build? How old is the unit?

Motherboard: Z87K

Z87-K - Support

www.asus.com

Is that your motherboard? While you're on the iGPU, see what BIOS version you're on and if you have any BIOS updates pending.

 

[whatdoitypehere9937982739]

Try in a different PCIE x16 slot.

 

[alecambo]

PSU: 600W
600W is the advertised wattage of the unit. What is the make and model of the PSU in your build? How old is the unit?

Its a Cooler Master Thunder 600W. TBH I don't know how old is the system. I bought it second hand for pretty cheap but I guess it has very high mileage. One IMPORTANT thing to mention is that it happened right after installing a new computer fan (but disconnecting the fan does not solve the issue. I even tried disconnecting all the fans)

 

[alecambo]

Try in a different PCIE x16 slot.

Thanks, I have already done so and this did not work.

 

[alecambo]

PSU: 600W
600W is the advertised wattage of the unit. What is the make and model of the PSU in your build? How old is the unit?

Motherboard: Z87K

Z87-K - Support

www.asus.com

Is that your motherboard? While you're on the iGPU, see what BIOS version you're on and if you have any BIOS updates pending.

The motherboard is also up to date to the latest firmware

 

[alecambo]

My CPU is also overclocked to 4.1 Ghz if that helps clarifying anything

 

[whatdoitypehere9937982739]

My CPU is also overclocked to 4.1 Ghz if that helps clarifying anything

Try going to BIOS with discrete gpu.

 

[alecambo]

Try going to BIOS with discrete gpu.

Thanks for the reply. I can't as the PC won't boot when the gpu is plugged in (I have also tried this)

 

[whatdoitypehere9937982739]

Do you have a different GPU other than your iGPU?

 

[alecambo]

Do you have a different GPU other than your iGPU?

At the moment, I don't. I will try to get one to see if that might be the issue