This very old i7 860 system had a overheating CPU and all case fans had seized so the system was overheating. It had cross firing GPUs something that isn’t so common anymore.
With the system been so old we recommended a new computer which the client agreed. New system had a i5 10th gen, 16GB RAM and 500GB NVMe SSD. Client opted to wait for the 3000 series RTX graphics card.