Intel S3420GPLC Server board RAM issue

So I got this S3420GPLC Intel Server Board with a Xeon X3430 to make a server, alright great.

The problem is that the ECC 24GB 6x4gb RAM doesn't work with it at all, and keeps beeping during boot and will not do anything else. I bought 3 times now 24gb ecc, 2 times from Samsung (the model is tested on Intel's list), and 1 time from Micron, which is also tested on Intel's list. I tried every single combination I can and it doesn't work, even with the bios update.

I tried normal Crucial 2x2gb ddr3-1066 non ecc ram I had lying around, and it works perfectly, but I want to use the 24gb ecc ram I got it. What could be the issue here?