Question Short circuit on power lines - What did break?

[Poldi-1]

I had a short circuit in my power lines and the breaker went while my PC was running.
After restoring power only 2 of my 4 connected screens show the PC picture (screens themselves are working, can access OSD and such).

The 2 working screens are connected via DisplayPort, the now-not-working ones via HDMI and DVI.

Is it possible this fried all ports of my GPU except the DP?

 

[Alabalcho]

If you have another place where to test these screens, I'd start with that first. OSD itself does not guarantee that inputs are OK.