@mezzodrinker yes. it ended up still not working in the end. Now we got to a point where it finally runs but for some weird reason the ram doesnt work in dual channel anymore so its now 2 single channel ram sticks. I have no idea how this happened but i guess the mainboard took damage somehow.
@jeder@mezzodrinker they dont work in 1-3 and 2-4 which is needed for dualchannel. the pc wont boot. the sticks themselves work individually though and now it works in 1-2 with both at once.