System Died After Installing Two P104-100s

My power supply or motherboard died after I installed two graphics cards for mining.

Please do not look if you dislike dirt, as there is dust in the images below.

I opened it for the first time in about 5 years. Before the change, it had one RX480.

Even back then, new specialized units were starting to be sold off for 20,000 yen due to the cryptocurrency collapse.
It seems like the price went up to about 40,000 yen during the bubble peak around 2020-2022.

I thought the Z68 chipset would be fine, but it feels like the power supply or motherboard couldn't withstand the high voltage from two graphics cards and died.

There's no point in buying a Haswell generation now, so I guess I'll finally switch to a Ryzen machine, which I was really interested in when it first came out.

I plan to gather all parts for under 5,000 yen each and keep the total cost under 20,000 yen.