

Just a heads up. I would strongly suggest you don’t recommend an ARC GPU on a motherboard missing rebar support. It’s critical for them to run correctly.
Edit: Also another thought. 3rd gen was the era when things started to get UEFI support. Newer cards might not post on a legacy bios.














Are you using the nvidia drivers and have your monitor connected to the gpu?
The 980 should be more than capable of a fully functional desktop experience, so after cleaning the dust it may have just been a heating issue.