No display / reboot sequence after installing new Arc B580 GPU

[farcaspian]

Hello, I come from an old RX560 GPU to Arc B580 (finally). Over the past year I also upgraded my CPU from Ryzen 1700x to 5700x and power supply from 450w to 850w.

Cpu - AMD Ryzen 5700x
Motherboard - ASRock Fatality AB350 pro mini-ITX

Current GPU - RX560 4GB Aero
RAM - 2x8 GB 3000
Boot - WD NVME 1TB 980
SSD - Samsung 860EVO 1TB

HDD - WD 8TB

PSU- Aresgame Gold 850w SFX 
Os - Windows 10 fully updated

Re-bar and 4G has been enabled on the motherboard.

Issue - 
Once new GPU is installed, motherboard logo screen comes up in low resolution and after a couple of seconds, system goes into BIOS menu. The BIOS menu itself looks good and not low resolution. After BIOS settings are saved or discarded, screen goes black with 3 little white dashes (in one line) for a few seconds and then system reboots into BIOS. This keeps happening for hours unless I unplug the power. If i put my old GPU back in all works fine. The CPU has no integrated graphics so I have to use some sort of GPU.

So far I have tried below troubleshooting steps - 

1. disconnect 8 pin power supply and re-seat the GPU.

2. Use PCIE 3.0 and 4.0 riser cable.

3. Install the new GPU directly on the motherboard.

4. Disable CSM, disable re-bar, disable 4G encoding, re-enable all these options, boot override, legacy boot etc.

5. Try all 4 display output ports.

6. Installed the Arc drivers via intel graphics driver installer but comes up with “something went wrong, no driver was found that can be installed on the current device installer exit code 8". The program then exits without installing any drivers. I am guessing that is because it actually needs the GPU to be installed before it installs the drivers but I can't do that because the system doesn't even start so that point is moot.

So close to returning this GPU as I have tried literally everything for past 2 days with no luck. Can someone help?

Is my motherboard at fault here or the GPU itself is faulty? Or am I missing drivers?

[farcaspian]

Adding some more details:

I downloaded and installed DDU > cleared all the drivers for existing GPU > shut down > removed old GPU > installed new GPU > same issue as described above.

[farcaspian]

Ok. I think I solved my own problem. I am going to put all the steps that I did in the hope that it might help someone in future.

Here is the main reason my system wasn't booting: the boot device was not compatible with Arc B580 and thus kept failing.

What the B580 needs, for folks on older hardware (motherboard and boot devices) is following:

1. Master boot record converted to GPT. My boot device was not compatible with the B580. Fortunately there is an easy way to convert your boot device to GPT (GUID Partition Table).

Install your old GPU and boot into windows. 

Run these commands:

> mbr2gpt /validate /allowFullOS

If validation is successful, run the conversion command:

> mbr2gpt /convert

2. Once above commands are successful, shut down.

3. Remove old GPU, install B580.

4. Disable CSM, enable Re-bar, enable 4G encoding.

5. Save and reboot.

6. SUCCESS!!

Now you can install the Arc drivers without any error.

[euclaze]

Hello! It's good to see that you got to resolve your issue farcaspian,

While I am curious to try your method, can you please take a look at my post first and see if it can be applied to my issue? I'm not very sure if our particular problems are quite similar but the GPU being undetected and having no display might resolve mines at least. 

https://community.intel.com/t5/Intel-Arc-Discrete-Graphics/No-display-after-installing-Intel-Arc-B580-32-0-101-8331-WHQL/m-p/1730258#M31852