No Signal on Screen (Except for a txt sometimes)

Hello, I have been having a problem with my mining PC. I built this PC at the beginning of 2018. It ran perfectly for quite a while. Due to a high electricity cost and the price of eth falling I stopped mining for a couple of months.

Now a week or so ago I wanted to turn it back on, But the screen gives me no signal. I have tried quite a lot of things. I tried two different screens, two different HDMI cables. I Tried 3 or four different GPUs to get a signal but nothing seemed to work.
After I did a bit of playing around a signal came onto the screen. It was not the UEFI BIOS but it was from ETHOS, since I had left the USB plugged in. The screen suddenly said that I was connecting from the wrong GPU, and that I was supposed to use GPU0. I tried that but it did not seem to work. I have gotten this image a couple of times now. I am not sure what to do, since I want to start mining again. I also can not understand why this message pops up on the screen but the booting or the uefi bios does not. PLEASE HELP ME.

So far I have tried to reset the uefi setting by taking out the little batterie, by using the loop which the motherboard has. I checked if any of the CPU or CPU socket pins were bent (they were fine). I pushed down the power button with the power supply turned off. I did that around 1000 times. I am going to try switching out the ram, but I have no Idea what else to do.

My build has 12 GPUs (NVIDEA 1060s)
I used the ASRock H110 Pro Btc+
8gb of ram (one stick)
Intel Celleron
The CPU cooler I use came with the CPU
I have ETHOS running of a usb stick
I use 2 Dark Power Pros (one 800W, the other 1000W)